[DemoApp][Bug] Remove teams meeting mentioning from chat demo app (#692)

azure-communication-ui/demo-app/src/chat/res/layout/activity_chat_launcher.xml

@@ -77,7 +77,7 @@
                 android:layout_height="wrap_content"
                 android:layout_marginTop="16dp"
                 android:ems="10"
-                android:hint="@string/end_point_url_hint"
+                android:hint="@string/endpoint_url_hint"
                 android:inputType="textNoSuggestions"
                 app:layout_constraintStart_toStartOf="@id/chatThreadID"
                 app:layout_constraintTop_toBottomOf="@id/chatThreadID"

azure-communication-ui/demo-app/src/main/res/values/strings.xml

@@ -11,8 +11,8 @@
     <string name="group_call_label">Group call</string>
     <string name="teams_meeting_label">Teams meeting</string>
     <string name="group_call_id_or_teams_meeting_hint">Group ID or Meeting link</string>
-    <string name="chat_thread_id_hint">Chat Thread ID/Teams Meeting URL</string>
-    <string name="end_point_url_hint">End Point URL</string>
+    <string name="chat_thread_id_hint">Chat Thread ID</string>
+    <string name="endpoint_url_hint">Endpoint</string>
     <string name="kotlin">Kotlin</string>
     <string name="java">Java</string>
     <string name="launch_button_text">Launch</string>