Make ^NOTE in markdown/html files bold

2015/howe/index.html

@@ -452,7 +452,7 @@ during a South Park P.T.A. Meeting?</p>
 <p>Or should we teach our youth to understand the intricacies of this code?
 Ying Tong Iddle I Po! We suggest you read the source for yourself, which
 might be easier than the academic papers it was inspired by.</p>
-<p>NOTE: Unlike the original entry source, <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2015/howe/prog.alt.c">prog.alt.c</a>,
+<p><strong>NOTE</strong>: Unlike the original entry source, <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2015/howe/prog.alt.c">prog.alt.c</a>,
 <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2015/howe/prog.c">prog.c</a> uses a
 64 bit FNV hash and fixes a function call warning.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>