spelling: fix typos and spelling errors

hgext/mq.py

@@ -3044,7 +3044,7 b' def strip(ui, repo, *revs, **opts):'
             descendantrevs = repo.revs("%s::." % uctx.rev())
             changedfiles = []
             for rev in descendantrevs:
-                # blindy reset the files, regardless of what actually changed
+                # blindly reset the files, regardless of what actually changed
                 changedfiles.extend(repo[rev].files())
 
             # reset files that only changed in the dirstate too

mercurial/context.py

@@ -1130,7 +1130,7 b' class workingctx(changectx):'
                 wlock.release()
 
     def markcommitted(self, node):
-        """Perform post-commit cleanup necessary after commiting this workingctx
+        """Perform post-commit cleanup necessary after committing this ctx
 
         Specifically, this updates backing stores this working context
         wraps to reflect the fact that the changes reflected by this

mercurial/help/config.txt

@@ -1494,7 +1494,7 b' The value of each entry defines the subs'
 The websub expressions follow the old interhg extension syntax,
 which in turn imitates the Unix sed replacement syntax::
 
-    pattername = s/SEARCH_REGEX/REPLACE_EXPRESSION/[i]
+    patternname = s/SEARCH_REGEX/REPLACE_EXPRESSION/[i]
 
 You can use any separator other than "/". The final "i" is optional
 and indicates that the search must be case insensitive.