docs: fix a link in the changes

Author: nedbat

CHANGES.rst

@@ -50,13 +50,13 @@ Version 7.6.2 — 2024-10-09
   a backslash continuation.  This is now fixed, closing `issue 1836`_, thanks
   to `LiuYinCarl and Marco Ricci <pull 1838_>`_.
 
-- Fix: the LCOV report now has correct line numbers (fixing `issue 1846`_`) and
+- Fix: the LCOV report now has correct line numbers (fixing `issue 1846`_) and
   better branch descriptions for BRDA records (fixing `issue 1850`_).  There
   are other changes to lcov also, including a new configuration option
   :ref:`line_checksums <config_lcov_line_checksums>` to control whether line
   checksums are included in the lcov report.  The default is false. To keep
   checksums set it to true.  All this work is thanks to Zack Weinberg
-  (`pull 1849_` and `pull 1851`_).
+  (`pull 1849`_ and `pull 1851`_).
 
 - Fixed the docs for multi-line regex exclusions, closing `issue 1863`_.