treewide: fix typos (#3092)

man/logind.conf.xml

@@ -122,7 +122,7 @@
         <listitem><para>Takes a boolean argument. Configures whether the processes of a
         user should be killed when the user logs out. If true, the scope unit
         corresponding to the session and all processes inside that scope will be
-        terminated. If false, the scope is "abandonded", see
+        terminated. If false, the scope is "abandoned", see
         <citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
         and processes are not killed. Defaults to <literal>yes</literal>,
         but see the options <varname>KillOnlyUsers=</varname> and

man/systemd.network.xml

@@ -217,7 +217,7 @@
         <para>Note that an interface without any static IPv6 addresses configured, and neither
         DHCPv6 nor IPv6LL enabled, shall be considered to have no IPv6 support. IPv6 will be
         automatically disabled for that interface by writing "1" to
-        <filename>/proc/sys/net/ipv6/conf/<replaceable>ifname</replaceable>/disable_ipv6.</filename>
+        <filename>/proc/sys/net/ipv6/conf/<replaceable>ifname</replaceable>/disable_ipv6</filename>.
         </para>
       </listitem>
       </varlistentry>

src/shared/install.c

@@ -1861,7 +1861,7 @@ int unit_file_revert(
          * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files (i.e. in
          *    "config", but not in "transient" or "control" or even "generated").
          *
-         * We remove all that in both the runtime and the persistant directories, if that applies.
+         * We remove all that in both the runtime and the persistent directories, if that applies.
          */
 
         r = lookup_paths_init(&paths, scope, 0, root_dir);