tests: fix a couple typos in test-resolve.t comments and add a comment

Differential Revision: https://phab.mercurial-scm.org/D5241

tests/test-resolve.t

@@ -435,7 +435,7 b' If the user passes an invalid value, we '
   $ hg resolve -l
   R file1
   R file2
-Test explicitly setting the otion to 'none'
+Test explicitly setting the option to 'none'
   $ hg resolve --unmark
   $ hg resolve -l
   U file1
@@ -583,7 +583,7 b' Test that commands.resolve.confirm respe'
   R emp3
 
 Test that commands.resolve.confirm respect --unmark option (only when no patterns args are given):
-===============================================================================================
+=================================================================================================
 
   $ hg resolve -u emp1
 
@@ -613,4 +613,6 b' Test that commands.resolve.confirm respe'
 
   $ hg rebase --abort
   rebase aborted
+
+Done with commands.resolve.confirm tests:
   $ cd ..