Rollup merge of rust-lang#65905 - cuviper:doc-unix-mode, r=Dylan-DPC

[doc] fixes for unix/vxworks `OpenOptionsExt::mode`

Author: pietroalbini

src/libstd/sys/unix/ext/fs.rs

@@ -303,10 +303,10 @@ impl PermissionsExt for Permissions {
 pub trait OpenOptionsExt {
     /// Sets the mode bits that a new file will be created with.
     ///
-    /// If a new file is created as part of a `File::open_opts` call then this
+    /// If a new file is created as part of an `OpenOptions::open` call then this
     /// specified `mode` will be used as the permission bits for the new file.
     /// If no `mode` is set, the default of `0o666` will be used.
-    /// The operating system masks out bits with the systems `umask`, to produce
+    /// The operating system masks out bits with the system's `umask`, to produce
     /// the final permissions.
     ///
     /// # Examples

src/libstd/sys/vxworks/ext/fs.rs

@@ -304,10 +304,10 @@ impl PermissionsExt for Permissions {
 pub trait OpenOptionsExt {
     /// Sets the mode bits that a new file will be created with.
     ///
-    /// If a new file is created as part of a `File::open_opts` call then this
+    /// If a new file is created as part of an `OpenOptions::open` call then this
     /// specified `mode` will be used as the permission bits for the new file.
     /// If no `mode` is set, the default of `0o666` will be used.
-    /// The operating system masks out bits with the systems `umask`, to produce
+    /// The operating system masks out bits with the system's `umask`, to produce
     /// the final permissions.
     ///
     /// # Examples