fix: add instruction for RHEL (#6893) (#6897)

(cherry picked from commit 25ca290)

Co-authored-by: Kai Tung Yu <115360130+yukaitung@users.noreply.github.com>

Author: mergify[bot]

source/Tutorials/Beginner-Client-Libraries/Colcon-Tutorial.rst

@@ -37,12 +37,18 @@ Install colcon
 
 .. tabs::
 
-  .. group-tab:: Linux
+  .. group-tab:: Ubuntu
 
     .. code-block:: console
 
         $ sudo apt install python3-colcon-common-extensions
 
+  .. group-tab:: RHEL
+
+    .. code-block:: console
+
+        $ sudo dnf install python3-colcon-common-extensions
+
   .. group-tab:: macOS
 
     .. code-block:: console

source/Tutorials/Intermediate/Rosdep.rst

@@ -157,9 +157,19 @@ If you are using ``rosdep`` with ROS, it is conveniently packaged along with the
 This is the recommended way to get ``rosdep``.
 You can install it with:
 
-.. code-block:: console
+.. tabs::
+
+  .. group-tab:: Ubuntu
+
+    .. code-block:: console
+
+        $ sudo apt install python3-rosdep
+
+  .. group-tab:: RHEL
+
+    .. code-block:: console
 
-    $ apt-get install python3-rosdep
+        $ sudo dnf install python3-rosdep
 
 .. note::
 

source/Tutorials/Intermediate/Tf2/Using-Stamped-Datatypes-With-Tf2-Ros-MessageFilter.rst

@@ -42,12 +42,18 @@ This tutorial expects you to have ``turtle_tf2_py`` package installed.
 
 .. tabs::
 
-  .. group-tab:: Linux
+  .. group-tab:: Ubuntu
 
     .. code-block:: console
 
         $ sudo apt install ros-{DISTRO}-turtle-tf2-py
 
+  .. group-tab:: RHEL
+
+    .. code-block:: console
+
+        $ sudo dnf install ros-{DISTRO}-turtle-tf2-py
+
   .. group-tab:: From Source
 
     .. code-block:: console