feat: Replace Twitter with X

Author: Lunyachek

lms/envs/common.py

@@ -2858,10 +2858,10 @@
         'url_stub': 'facebook.com/',
         'example': 'https://www.facebook.com/username'
     },
-    'twitter': {
-        'display_name': 'Twitter',
-        'url_stub': 'twitter.com/',
-        'example': 'https://www.twitter.com/username'
+    'x': {
+        'display_name': 'X',
+        'url_stub': 'x.com/',
+        'example': 'https://www.x.com/username'
     },
     'linkedin': {
         'display_name': 'LinkedIn',

openedx/core/djangoapps/user_api/accounts/serializers.py

@@ -99,12 +99,12 @@ class Meta:
 
     def validate_platform(self, platform):
         """
-        Validate that the platform value is one of (facebook, twitter or linkedin)
+        Validate that the platform value is one of (facebook, x or linkedin)
         """
-        valid_platforms = ["facebook", "twitter", "linkedin"]
+        valid_platforms = ["facebook", "x", "linkedin"]
         if platform not in valid_platforms:
             raise serializers.ValidationError(
-                "The social platform must be facebook, twitter or linkedin"
+                "The social platform must be facebook, x or linkedin"
             )
         return platform