[wwwdocs] document -Wtype-limits in GCC 4.3 changelog

[Manuel López-Ibáñez]

-Wtype-limits was missing from the original patch. I also linked to
the warning options web page.

Since it is such a minimal change I have committed it as obvious.

Cheers,

Manuel.

Index: htdocs/gcc-4.3/changes.html
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RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.3/changes.html,v
retrieving revision 1.84
retrieving revision 1.85
diff -r1.84 -r1.85
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<     New command-line options <code>-Wold-style-declaration</code>,
---
>     New <a
>     href="http://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html"
>     >command-line options</a> <code>-Wtype-limits</code>,
>     <code>-Wold-style-declaration</code>,