Fixes a typo - Licences should be Licenses in Preferences dialog.

Author: sebastian.vallet

resources/i18n/OpenBoard_en.ts

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE TS>
-<TS version="2.1">
+<TS version="2.1" language="en">
 <context>
     <name>BlackoutWidget</name>
     <message>
@@ -1600,6 +1600,7 @@ Do you wish to override the security check and continue ?   </source>
         <comment>duplicated %1 pages</comment>
         <translation type="unfinished">
             <numerusform></numerusform>
+            <numerusform></numerusform>
         </translation>
     </message>
     <message>
@@ -1939,6 +1940,7 @@ Providing a new name will create a new document.</source>
         <source>%1 pages copied</source>
         <translation type="unfinished">
             <numerusform></numerusform>
+            <numerusform></numerusform>
         </translation>
     </message>
 </context>
@@ -1949,6 +1951,7 @@ Providing a new name will create a new document.</source>
         <source>%1 pages copied</source>
         <translation type="unfinished">
             <numerusform></numerusform>
+            <numerusform></numerusform>
         </translation>
     </message>
     <message>
@@ -3791,7 +3794,7 @@ p, li { white-space: pre-wrap; }
     <message>
         <location filename="../forms/preferences.ui" line="1103"/>
         <source>Licences</source>
-        <translation type="unfinished"></translation>
+        <translation>Licenses</translation>
     </message>
     <message>
         <location filename="../forms/preferences.ui" line="3104"/>