Remove unnecessary text description for buttons on Interest page

Change-Id: I33968bf3a42de795eaa55e72cb86c2898f936dd1

feature/interests/src/main/res/values/strings.xml

@@ -18,8 +18,8 @@
     <string name="interests">Interests</string>
     <string name="loading">Loading data</string>
     <string name="empty_header">"No available data"</string>
-    <string name="card_follow_button_content_desc">Follow interest button</string>
-    <string name="card_unfollow_button_content_desc">Unfollow interest button</string>
+    <string name="card_follow_button_content_desc">Follow interest</string>
+    <string name="card_unfollow_button_content_desc">Unfollow interest</string>
     <string name="top_app_bar_title">Interests</string>
     <string name="top_app_bar_action_menu">Menu</string>
     <string name="top_app_bar_action_search">Search</string>