replace Polls history strings with Poll history (#10454)

Co-authored-by: Michael Weimann <michaelw@matrix.org>

src/components/views/dialogs/RoomSettingsDialog.tsx

@@ -167,7 +167,7 @@ export default class RoomSettingsDialog extends React.Component<IProps, IState>
         tabs.push(
             new Tab(
                 ROOM_POLL_HISTORY_TAB,
-                _td("Polls history"),
+                _td("Poll history"),
                 "mx_RoomSettingsDialog_pollsIcon",
                 <PollHistoryTab roomId={this.props.roomId} onFinished={() => this.props.onFinished(true)} />,
             ),

src/components/views/polls/pollHistory/PollHistory.tsx

@@ -63,7 +63,7 @@ export const PollHistory: React.FC<PollHistoryProps> = ({ room, matrixClient, pe
     const title = focusedPoll ? (
         <PollDetailHeader filter={filter} onNavigateBack={() => setFocusedPollId(null)} />
     ) : (
-        _t("Polls history")
+        _t("Poll history")
     );
 
     return (

src/components/views/right_panel/RoomSummaryCard.tsx

@@ -343,7 +343,7 @@ const RoomSummaryCard: React.FC<IProps> = ({ room, permalinkCreator, onClose })
                 )}
                 {!isVideoRoom && (
                     <Button className="mx_RoomSummaryCard_icon_poll" onClick={onRoomPollHistoryClick}>
-                        {_t("Polls history")}
+                        {_t("Poll history")}
                     </Button>
                 )}
                 {pinningEnabled && !isVideoRoom && (

src/i18n/strings/en_EN.json

@@ -2237,7 +2237,7 @@
     "Not encrypted": "Not encrypted",
     "About": "About",
     "Files": "Files",
-    "Polls history": "Polls history",
+    "Poll history": "Poll history",
     "Pinned": "Pinned",
     "Export chat": "Export chat",
     "Share room": "Share room",