Apply suggestion from @marcoscaceres

Author: marcoscaceres

codec_registry.src.html

@@ -64,7 +64,7 @@
 2. The <a>codec string</a> requirements are as follows:
     1. If the <a>codec string</a> contains a fixed prefix with variable suffix values,
         the suffix must be represented by an asterisk and the registration's
-        public specification needs to describe how to fully qualify the variable
+        public specification must describe how to fully qualify the variable
         portion of the string.
     2. Otherwise, if the codec is recognized by multiple strings, a single
         preferred string should be listed and the registration's specification