comments: fix typos

Differential Revision: https://phab.mercurial-scm.org/D9689

mercurial/repoview.py

@@ -159,7 +159,7 b' def computeimpactable(repo, visibilityex'
     This filter out any mutable changeset and any public changeset that may be
     impacted by something happening to a mutable revision.
 
-    This is achieved by filtered everything with a revision number egal or
+    This is achieved by filtered everything with a revision number equal or
     higher than the first mutable changeset is filtered."""
     assert not repo.changelog.filteredrevs
     cl = repo.changelog

mercurial/revlogutils/sidedata.py

@@ -13,8 +13,8 b' important information related to a chang'
 The current implementation is experimental and subject to changes. Do not rely
 on it in production.
 
-Sidedata are stored in the revlog itself, withing the revision rawtext. They
-are inserted, removed from it using the flagprocessors mechanism. The following
+Sidedata are stored in the revlog itself, within the revision rawtext. They
+are inserted and removed from it using the flagprocessors mechanism. The following
 format is currently used::
 
     initial header:
@@ -27,7 +27,7 b' format is currently used::'
     normal raw text:
         <all bytes remaining in the rawtext>
 
-This is a simple and effective format. It should be enought to experiment with
+This is a simple and effective format. It should be enough to experiment with
 the concept.
 """