Add GLX_EXT_no_config_context to the registry

This didn't get added to the registry generation script, oops.
diff --git a/extensions/EXT/GLX_EXT_no_config_context.txt b/extensions/EXT/GLX_EXT_no_config_context.txt
index c776fe2..fbf354b 100644
--- a/extensions/EXT/GLX_EXT_no_config_context.txt
+++ b/extensions/EXT/GLX_EXT_no_config_context.txt
@@ -40,7 +40,11 @@
 
 Version
 
-    Version 6, 2017/12/05
+    Version 8, 2020/10/05
+
+Number
+
+    OpenGL Extension #553
 
 Dependencies
 
@@ -260,6 +264,9 @@
 
 Revision History
 
+    Version 8, 2020/10/05 (Adam Jackson)
+    - Add extension number
+
     Version 7, 2017/12/05 (Adam Jackson)
     - Mark complete.
 
diff --git a/extensions/glext.php b/extensions/glext.php
index 9cd7eb6..89618c1 100644
--- a/extensions/glext.php
+++ b/extensions/glext.php
@@ -1043,4 +1043,6 @@
 </li>
 <li value=552><a href="extensions/EXT/GLX_EXT_get_drawable_type.txt">GLX_EXT_get_drawable_type</a>
 </li>
+<li value=553><a href="extensions/EXT/GLX_EXT_no_config_context.txt">GLX_EXT_no_config_context</a>
+</li>
 </ol>
diff --git a/extensions/registry.py b/extensions/registry.py
index a66b35a..41f8fda 100644
--- a/extensions/registry.py
+++ b/extensions/registry.py
@@ -2044,6 +2044,11 @@
         'supporters' : { 'NVIDIA' },
         'url' : 'extensions/EXT/EXT_multiview_timer_query.txt',
     },
+    'GLX_EXT_no_config_context' : {
+            'number' : 553,
+            'flags' : { 'public' },
+            'url' : 'extensions/EXT/GLX_EXT_no_config_context.txt',
+    },
     'GLU_EXT_nurbs_tessellator' : {
         'number' : 100,
         'flags' : { 'public' },