Update en.json

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

app/soapbox/locales/en.json

@@ -695,6 +695,8 @@
   "hashtag.column_header.tag_mode.all": "and {additional}",
   "hashtag.column_header.tag_mode.any": "or {additional}",
   "hashtag.column_header.tag_mode.none": "without {additional}",
+  "hashtag.follow": "Follow hashtag",
+  "hashtag.unfollow": "Unfollow hashtag",
   "header.home.label": "Home",
   "header.login.forgot_password": "Forgot password?",
   "header.login.label": "Log in",