Correct the broken links

_includes/topnav.html

@@ -21,7 +21,7 @@
                 <li {% if page.sectionid=='forum' %} class="active" {% endif %}><a href="{{ "https://www.cfd-online.com/Forums/su2/" }}">User Forum</a></li>
                 <li {% if page.sectionid=='slack' %} class="active" {% endif %}><a href="{{ "https://join.slack.com/t/su2devteam/shared_invite/zt-af0uuqf8-8XNExKMV9G~UVsnkvi5uVA" }}">Dev Team Slack</a></li>
                 <li {% if page.sectionid=='develop' %} class="active" {% endif %}><a href="{{ "/develop.html" relative_url }}">Develop</a></li>
-                <li {% if page.sectionid=='su2gui' %} class="active" {% endif %}><a href="{{ "/su2gui/introduction" relative_url }}">GUI</a></li>
+                <li {% if page.sectionid=='su2gui' %} class="active" {% endif %}><a href="{{ "/su2gui/Introduction" relative_url }}">GUI</a></li>
             </ul>
             <div class="navbar-right">
                 <ul class="nav navbar-nav">

_su2gui/Configurations.md

@@ -10,7 +10,7 @@ SU2GUI allows users to load a configuration file through both the GUI and the te
 
 **Steps to load configuration file:**
 
- 1. Start a new case and load mesh file. Follow these guides for detailed steps on [starting a new case](../Manage-Cases/#starting-a-new-case) and [loading a mesh file](../mesh-file).
+ 1. Start a new case and load mesh file. Follow these guides for detailed steps on [starting a new case](../Manage-Cases/#starting-a-new-case) and [loading a mesh file](../Mesh-File).
 
 
  2. Click on the "Load Config File" option. ![](../../su2gui_files/User_guide/Configuration/button-config-file.png)
@@ -23,7 +23,7 @@ SU2GUI allows users to load a configuration file through both the GUI and the te
 
 
 
-For instructions on loading a configuration file through the terminal, refer to the guide on [ Terminal Initialization](./../terminal-initialization).
+For instructions on loading a configuration file through the terminal, refer to the guide on [ Terminal Initialization](./../Terminal-Initialization).
 
 ## Config Tab
 

_su2gui/Initialization.md

@@ -14,7 +14,7 @@ SU2GUI supports three methods for initializing a problem, which are available un
 
 ### Opening the Initialization Options
 
-1. Start a new case and load the mesh file. Follow these guides for detailed steps on [starting a new case](../Manage-Cases/#starting-a-new-case) and [loading a mesh file](../mesh-file).
+1. Start a new case and load the mesh file. Follow these guides for detailed steps on [starting a new case](../Manage-Cases/#starting-a-new-case) and [loading a mesh file](../Mesh-File).
 
 2. Navigate to the Initialization section from the left menu:  
    ![](../../su2gui_files/User_guide/initialization/initialize-options.png)
@@ -51,13 +51,13 @@ SU2GUI supports both `.dat` and `.csv` formats for restart files.
 
 1. After opening the Initialization options, select **Restart File Initialization** from the drop-down menu.
 
-2. Click on the **Load Restart File** option. ![](../../su2gui_files/User_guide/initialization/button-restart-file.png)
+2. Click on the **Load Restart File** option. ![](../../su2gui_files/User_guide/Initialization/button-restart-file.png)
 
 3. In the pop-up window, choose the desired restart file. ![](../../su2gui_files/User_guide/initialization/choose-restart-file.png)
 
 4. The Restart file will be loaded, and the visualization window will update accordingly. ![](../../su2gui_files/User_guide/initialization/loaded-restart-file.png)
 
-For instructions on loading a restart file through the terminal, refer to the guide on [ Terminal Initialization](./../terminal-initialization).
+For instructions on loading a restart file through the terminal, refer to the guide on [ Terminal Initialization](./../Terminal-Initialization).
 
 ---
 

_su2gui/Manage-Cases.md

@@ -49,4 +49,4 @@ Loading a case is essential to start working with SU2GUI, as it helps organize a
 
 ## Loading a Case from the Terminal
 
-When starting SU2GUI from the terminal, users can specify a case name. If the case already exists, SU2GUI will load it; if not, it will start a new case. For instructions on loading a case through the terminal, refer to the guide on [Terminal Initialization](./../terminal-initialization).
+When starting SU2GUI from the terminal, users can specify a case name. If the case already exists, SU2GUI will load it; if not, it will start a new case. For instructions on loading a case through the terminal, refer to the guide on [Terminal Initialization](./../Terminal-Initialization).

_su2gui/Mesh.md

@@ -25,4 +25,4 @@ SU2GUI offers the option to load a mesh file through both the GUI and the termin
 
 
 
-For instructions on loading a mesh file through the terminal, refer to the guide on [ Terminal Initialization](./../terminal-initialization).
+For instructions on loading a mesh file through the terminal, refer to the guide on [ Terminal Initialization](./../Terminal-Initialization).

_su2gui/Result-Analysis.md

@@ -40,4 +40,4 @@ SU2 generates various output files, such as:
 - **Surface Data**: Pressure and skin friction coefficients.
 - **Visualization Files**: Files compatible with tools like ParaView.
 
-SU2GUI allows you to download all output files from a case. For instructions on case management, refer to the [case installation procedure](../manage-cases/). By thoroughly analyzing these files, you can gain insights, validate models, and make informed decisions for future simulations.
+SU2GUI allows you to download all output files from a case. For instructions on case management, refer to the [case installation procedure](../Manage-Cases/). By thoroughly analyzing these files, you can gain insights, validate models, and make informed decisions for future simulations.