Fix button label

Fixes #570
Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/html/translate.html

@@ -293,7 +293,7 @@
 {{ comment_form|crispy }}
 </div>
 <div class="panel-footer">
-<input type="submit" value="{% trans "Search" %}" class="btn btn-default" />
+<input type="submit" value="{% trans "Save" %}" class="btn btn-default" />
 </div>
 </div>
 </form>