Attempt to clarify example a little

specification/appendices/threepids.rst

@@ -24,8 +24,8 @@ address, in a well-defined manner.
 
 For example, for e-mail, the ``medium`` is 'email' and the ``address`` would be the
 email address, *e.g.* the string ``bob@example.com``. Since domain resolution is
-case-insensitive, the email address ``bob@Example.com`` also has a 3PID address
+case-insensitive, the email address ``bob@Example.com`` is also has the 3PID address
-of ``bob@example.com`` and not ``bob@Example.com``.
+of ``bob@example.com`` (without the capital 'e') rather than ``bob@Example.com``.
 
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 may be defined in future versions of this specification.