fix: change readme to not use raw directive

Author: fracek

README.rst

@@ -3,7 +3,6 @@ GALINI
 
 Contributors
 ------------
-
 .. list-table::
    :header-rows: 1
    :widths: 10 40 50
@@ -22,14 +21,13 @@ Contributors
 
 
 .. _fracek: https://github.com/fracek
-.. |fracek| raw:: html
+.. |fracek| image:: https://avatars1.githubusercontent.com/u/282580?s=120&v=4
+   :width: 80px
 
-  <img src="https://avatars1.githubusercontent.com/u/282580?s=120&v=4" width="80px" />
 
 .. _rb2309: https://github.com/rb2309
-.. |rb2309| raw:: html
-
-  <img src="https://avatars2.githubusercontent.com/u/1138134?s=120&v=4" width="80px" />
+.. |rb2309| image:: https://avatars2.githubusercontent.com/u/1138134?s=120&v=4
+   :width: 80px