DOCS-396: minor wording tweak

Author: Sam Kleinman

source/includes/note-minimum-glibc.rst

@@ -3,6 +3,5 @@
    MongoDB uses the
    `GNU C Library <http://www.gnu.org/software/libc/>`_
    (glibc) if available on a system.
-   Version glibc-2.12-1.2.el6 is required to avoid a known bug
-   with earlier versions, however a minimum level of 2.13 is
-   recommended.
+   MongoDB requires version at least ``glibc-2.12-1.2.el6`` to avoid a known bug
+   with earlier versions. For best results use at least version 2.13.