Quote 'like this' in top-level files

* CONTRIBUTE, INSTALL, Makefile.in, README, configure.ac, make-dist:
Prefer to single-quote 'like this' (instead of the older style
`like this').
* configure.ac: Fix some space-before-tab problems that 'git commit'
complained about.

1 files changed, 2 insertions, 2 deletions

diff --git a/CONTRIBUTE b/CONTRIBUTE
index 4205bc3990a..d0e3750dc9d 100644
--- a/CONTRIBUTE
+++ b/CONTRIBUTE
@@ -146,7 +146,7 @@ The general format is as follows.
   a top-level ChangeLog file manually, and update it with 'C-x 4 a' as
   usual.  Do not register the ChangeLog file under git; instead, use
   'C-c C-a' to insert its contents into into your *vc-log* buffer.
-  Or if `log-edit-hook' includes `log-edit-insert-changelog' (which it
+  Or if 'log-edit-hook' includes 'log-edit-insert-changelog' (which it
   does by default), they will be filled in for you automatically.
 
 - Alternatively, you can use the vc-dwim command to maintain commit
@@ -236,7 +236,7 @@ the entry with "+++". Otherwise do not mark it.
 
 Please see (info "(elisp)Documentation Tips") or
 https://www.gnu.org/software/emacs/manual/html_node/elisp/Documentation-Tips.html
-for more specific tips on Emacs's doc style.  Use `checkdoc' to check
+for more specific tips on Emacs's doc style.  Use 'checkdoc' to check
 for documentation errors before submitting a patch.
 
 ** Test your changes.