address comments and update pull_request.yml

Signed-off-by: jason yang <[email protected]>

.github/workflows/pull_request.yml

@@ -34,7 +34,7 @@ jobs:
 
       - name: Install Sphinx
         run: |
-          pip install --user --upgrade --upgrade-strategy eager setuptools sphinx sphinx-rtd-theme restructuredtext_lint rstcheck pygments m2r2
+          pip install --user --upgrade --upgrade-strategy eager docutils==0.16 setuptools sphinx sphinx-rtd-theme restructuredtext_lint rstcheck pygments m2r2
 
       - name: Lint rst
         run: |

checkpoint.rst

@@ -162,7 +162,7 @@ the state of a variable on the server.
     $ curl --http0.9 localhost:8888
     request:1
 
-We can see that request count value is ``1`` when this application is started
+We can see that the request count value is ``1`` when this application is started
 and accessed via curl. After making another call to the application, we can see that the request
 count is ``2`` as expected.
 
@@ -171,7 +171,7 @@ count is ``2`` as expected.
     $ curl --http0.9 localhost:8888
     request:2
 
-Now that request count variable on our server is in a new state, ``2``, we can use the
+Now that the request count variable on our server is in a new state, ``2``, we can use the
 ``checkpoint instance`` command and reference the instance via the
 ``instance://`` URI format:
 
@@ -200,22 +200,22 @@ our application's state:
 
 
 And now when we get access to the application again, the request count value is ``3`` as expected,
-meaning that previous request count value is ``2``.
+meaning that the previous request count value was ``2``.
 
 .. code::
 
     $ curl --http0.9 localhost:8888
     $ request:3
 
-We can repeat previous two steps, i.e. stop server instance and restart it via dmtcp to verify the restoration
-of the value of request count.
+We can repeat the previous two steps, i.e. stop the server instance and restart it via dmtcp to verify the restoration
+of the value of the request count.
 
 .. code::
 
     $ {command} instance stop server
     $ {command} instance start --dmtcp-restart example-checkpoint server.sif restarted-server 8888
 
-Then access the application and see that request count value is restored as expected. 
+Then access the application and see that the request count value is restored as expected. 
 
 .. code::