no bug - document reviewbot behavior when the doc is modified r=andi DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D165623

tools/moztreedocs/docs/run-try-job.rst

@@ -1,7 +1,7 @@
 Running a try job for Documentation
 -----------------------------------
 
-Documentation has two try jobs associated :
+Documentation has two try jobs associated:
 
   - ``doc-generate`` - This generates the documentation with the committed changes on the try server and gives the same output as if it has landed on regular integration branch.
 
@@ -15,6 +15,8 @@ Documentation has two try jobs associated :
 
       mach try fuzzy -q "'doc-upload"
 
+When the documentation is modified, at review phase, reviewbot will automatically generate a temporary documentation with a direct link to the modified pages.
+
 .. important::
 
    Running try jobs require the user to have try server access.