Fix an enum value in the EGL_EXT_device_query_name spec. (#123)

Fix a typo in the spec for EGL_EXT_device_query_name. The spec lists the
EGL_RENDERER_EXT enum as 0x335E, but it should be 0x335F.

egl.xml already has the correct value.
diff --git a/extensions/EXT/EGL_EXT_device_query_name.txt b/extensions/EXT/EGL_EXT_device_query_name.txt
index f3d21a5..bb2be91 100644
--- a/extensions/EXT/EGL_EXT_device_query_name.txt
+++ b/extensions/EXT/EGL_EXT_device_query_name.txt
@@ -59,7 +59,7 @@
 
     Accepted by the <name> parameter of eglQueryDeviceStringEXT:
 
-        EGL_RENDERER_EXT                0x335E
+        EGL_RENDERER_EXT                0x335F
 
 New Device Queries