Style nit in registry.py

extensions/registry.py

diff --git a/extensions/registry.py b/extensions/registry.py
index 47da02b..0dd8bfa 100644
--- a/extensions/registry.py
+++ b/extensions/registry.py
@@ -2560,7 +2560,7 @@
         'url' : 'extensions/EXT/EXT_texture_sRGB_R8.txt',
     },
     'GL_EXT_texture_sRGB_RG8' : {
-        'number': 555,
+        'number' : 555,
         'esnumber' : 223,
         'flags' : { 'public' },
         'url' : 'extensions/EXT/EXT_texture_sRGB_RG8.txt',