Update from transifex

OpenKeychain/src/main/res/raw-ru/help_changelog.html

@@ -4,7 +4,7 @@
 <h2>2.6</h2>
 <ul>
 <li>key certifications (thanks to Vincent Breitmoser)</li>
-<li>support GnuPG partial secret keys (thanks to Vincent Breitmoser)</li>
+<li>support for GnuPG partial secret keys (thanks to Vincent Breitmoser)</li>
 <li>new design for signature verification</li>
 <li>custom key length (thanks to Greg Witczak)</li>
 <li>fix share-functionality from other apps</li>