Tiny documentation update

playbooks/roles/lms/tasks/main.yml

@@ -102,7 +102,7 @@
   - cms
 
 # Install the python modules into $venv_dir 
-- name : install python pre-requirements
+- name : install python packages using the shell
   #pip: requirements="{{app_base_dir}}/mitx/requirements.txt" virtualenv="{{venv_dir}}" 
   # Need to use shell rather than pip so that we can maintain the context of our current working directory; some 
   # requirements are pathed relative to the mitx repo. Using the pip from inside the virtual environment implicitly