[rep-0151] rst not rendering Python shebang code, which is crucial in the context. (ros-infrastructure#316)

* [rep-0151] rst not rendering Python shebang code, which is crucial in the context.

* [rep-0151] Correct code block for Python shebang

Co-authored-by: Chris Lalancette <[email protected]>

Author: 130s

rep-0151.rst

@@ -175,7 +175,7 @@ Shebangs and reliance on the Python command
 '''''''''''''''''''''''''''''''''''''''''''
 Python scripts on UNIX systems typically have shebang lines written as:
 
-.. code-block: bash
+.. code-block:: bash
 
     #!/usr/bin/env python
 
@@ -207,7 +207,7 @@ Python 3 equivalents.
 Packages using the same code base for multiple ROS distros should instead use
 conditional dependencies as described in REP 149 [5]_.
 
-.. code-block: xml
+.. code-block:: xml
 
     <depend condition="$ROS_PYTHON_VERSION == '2'">python-numpy</depend>
     <depend condition="$ROS_PYTHON_VERSION == '3'">python3-numpy</depend>