rename close poll to end poll

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/res/layout/dialog_poll_results.xml

@@ -41,7 +41,7 @@
         android:id="@+id/poll_results_close_poll_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="@string/polls_close_poll"
+        android:text="@string/polls_end_poll"
         style="@style/OutlinedButton"
         android:layout_marginEnd="@dimen/standard_margin"
         app:cornerRadius="@dimen/button_corner_radius"

app/src/main/res/layout/dialog_poll_vote.xml

@@ -54,7 +54,7 @@
         android:id="@+id/poll_vote_close_poll_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="@string/polls_close_poll"
+        android:text="@string/polls_end_poll"
         style="@style/OutlinedButton"
         android:layout_marginEnd="@dimen/standard_margin"
         app:cornerRadius="@dimen/button_corner_radius"

app/src/main/res/values/strings.xml

@@ -539,7 +539,7 @@
     <!-- Polls -->
     <string name="polls_amount_voters">Poll results - %1$s votes</string>
     <string name="polls_add_option">Add Option</string>
-    <string name="polls_close_poll">Close Poll</string>
+    <string name="polls_end_poll">End Poll</string>
 
     <string name="title_attachments">Attachments</string>