githelp: lowercase the start of output messages for consistency

I left 'Mercurial' as a proper name capitalized.

hgext/githelp.py

@@ -196,7 +196,7 b' def apply(ui, repo, *args, **kwargs):'
     ui.status((bytes(cmd)), "\n")
 
 def bisect(ui, repo, *args, **kwargs):
-    ui.status(_("See 'hg help bisect' for how to use bisect.\n\n"))
+    ui.status(_("see 'hg help bisect' for how to use bisect.\n\n"))
 
 def blame(ui, repo, *args, **kwargs):
     cmdoptions = [
@@ -456,7 +456,7 b' def commit(ui, repo, *args, **kwargs):'
     ui.status((bytes(cmd)), "\n")
 
 def deprecated(ui, repo, *args, **kwargs):
-    ui.warn(_('This command has been deprecated in the git project, ' +
+    ui.warn(_('this command has been deprecated in the git project, ' +
         'thus isn\'t supported by this tool.\n\n'))
 
 def diff(ui, repo, *args, **kwargs):
@@ -656,8 +656,8 b' def mergebase(ui, repo, *args, **kwargs)'
     cmd = Command("log -T '{node}\\n' -r 'ancestor(%s,%s)'"
                   % (args[0], args[1]))
 
-    ui.status(_('NOTE: ancestors() is part of the revset language.\n'),
-              _("Learn more about revsets with 'hg help revsets'\n\n"))
+    ui.status(_('note: ancestors() is part of the revset language.\n'),
+              _("(learn more about revsets with 'hg help revsets')\n\n"))
     ui.status((bytes(cmd)), "\n")
 
 def mergetool(ui, repo, *args, **kwargs):
@@ -776,7 +776,7 b' def rebase(ui, repo, *args, **kwargs):'
             "\n\n"))
         cmd['-d'] = convert(opts.get('onto'))
         if len(args) < 2:
-            raise error.Abort(_("Expected format: git rebase --onto X Y Z"))
+            raise error.Abort(_("expected format: git rebase --onto X Y Z"))
         cmd['-s'] = "'::%s - ::%s'" % (convert(args[1]), convert(args[0]))
     else:
         if len(args) == 1:
@@ -815,10 +815,10 b' def reset(ui, repo, *args, **kwargs):'
     hard = opts.get('hard')
 
     if opts.get('mixed'):
-        ui.status(_('NOTE: --mixed has no meaning since Mercurial has no '
+        ui.status(_('note: --mixed has no meaning since Mercurial has no '
                     'staging area\n\n'))
     if opts.get('soft'):
-        ui.status(_('NOTE: --soft has no meaning since Mercurial has no '
+        ui.status(_('note: --soft has no meaning since Mercurial has no '
                     'staging area\n\n'))
 
     cmd = Command('update')

tests/test-githelp.t

@@ -165,11 +165,11 b' githelp for reset, checking ~ in git bec'
   hg update .~3
 
   $ hg githelp -- reset --mixed HEAD
-  NOTE: --mixed has no meaning since Mercurial has no staging area
+  note: --mixed has no meaning since Mercurial has no staging area
   
   hg update .
   $ hg githelp -- reset --soft HEAD
-  NOTE: --soft has no meaning since Mercurial has no staging area
+  note: --soft has no meaning since Mercurial has no staging area
   
   hg update .
   $ hg githelp -- reset --hard HEAD
@@ -221,7 +221,7 b' githelp for stash drop with name'
 
 githelp for whatchanged should show deprecated message
   $ hg githelp -- whatchanged -p
-  This command has been deprecated in the git project, thus isn't supported by this tool.
+  this command has been deprecated in the git project, thus isn't supported by this tool.
   
 
 githelp for git branch -m renaming
@@ -259,8 +259,8 b' githelp for apply with directory strip c'
 git merge-base
   $ hg githelp -- git merge-base --is-ancestor
   ignoring unknown option --is-ancestor
-  NOTE: ancestors() is part of the revset language.
-  Learn more about revsets with 'hg help revsets'
+  note: ancestors() is part of the revset language.
+  (learn more about revsets with 'hg help revsets')
   
   hg log -T '{node}\n' -r 'ancestor(A,B)'