fix: fix grammar/typos in hg help -e fix

hgext/fix.py

@@ -114,7 +114,7 b' perform other post-fixing work. The supp'
     executions that modified a file. This aggregates the same metadata
     previously passed to the "postfixfile" hook.
 
-Fixer tools are run the in repository's root directory. This allows them to read
+Fixer tools are run in the repository's root directory. This allows them to read
 configuration files from the working copy, or even write to the working copy.
 The working copy is not updated to match the revision being fixed. In fact,
 several revisions may be fixed in parallel. Writes to the working copy are not

tests/test-fix.t

@@ -226,7 +226,7 b' Help text for fix.'
       executions that modified a file. This aggregates the same metadata
       previously passed to the "postfixfile" hook.
   
-  Fixer tools are run the in repository's root directory. This allows them to
+  Fixer tools are run in the repository's root directory. This allows them to
   read configuration files from the working copy, or even write to the working
   copy. The working copy is not updated to match the revision being fixed. In
   fact, several revisions may be fixed in parallel. Writes to the working copy