[omemo] Reword the manifest.ini description

omemo/manifest.ini

@@ -2,7 +2,7 @@
 name: OMEMO
 short_name: omemo
 version: 1.2.4
-description: OMEMO is an XMPP Extension Protocol (XEP) for secure multi-client end-to-end encryption based on Axolotl and PEP. You need to install some dependencys, you can find install instructions for your system in the Gitlab Wiki.
+description: OMEMO is an XMPP Extension Protocol (XEP) for secure multi-client end-to-end encryption based on Axolotl and PEP. You need to install some dependencies. For install instructions, see the GitLab Wiki.
 authors: Bahtiar `kalkin-` Gadimov <bahtiar@gadimov.de>
  Daniel Gultsch <daniel@gultsch.de>
  Philipp Hörist <philipp@hoerist.com>