man: drop apostophe from section title

For whatever reason, this does not get rendered propely in the man
page and results in an invalid code:
W: manual-page-warning /usr/share/man/man7/systemd.special.7.gz 103: warning: macro `AQ' not defined

We say 'user manager' and 'system manager' in most other places, so let's just
use this form here too.

diff --git a/man/systemd.special.xml b/man/systemd.special.xml
index d54a5de8715b53d63fcd6cd8bea6d40c60e56a2a..c37e732b5f4b6c86aa487e4be1111795bbd5eae1 100644 (file)
--- a/man/systemd.special.xml
+++ b/man/systemd.special.xml
@@ -106,7 +106,7 @@
   </refsect1>
 
   <refsect1>
-    <title>Units managed by the system's service manager</title>
+    <title>Units managed by the system service manager</title>
 
     <refsect2>
       <title>Special System Units</title>
@@ -1058,7 +1058,7 @@
   </refsect1>
 
   <refsect1>
-    <title>Units managed by the user's service manager</title>
+    <title>Units managed by the user service manager</title>
 
     <refsect2>
       <title>Special User Units</title>