revert: is reverting file states, not just file contents

e.g. x bit is reverted as well

Also makes this paragraph more consistent with the preceding one,
which already uses the term "state" (not "content").

mercurial/commands.py

@@ -4102,7 +4102,7 b' def revert(ui, repo, *pats, **opts):'
     state and unschedules adds, removes, copies, and renames.
 
     Using the -r/--rev or -d/--date options, revert the given files or
-    directories to their contents as of a specific revision. Because
+    directories to their states as of a specific revision. Because
     revert does not change the working directory parents, this will
     cause these files to appear modified. This can be helpful to "back
     out" some or all of an earlier change. See :hg:`backout` for a