Fix use of wront in-line delimiters in example file. Fixes issue #326.

Author: dpvc

test/sample-eqrefs.html

@@ -55,7 +55,7 @@ <h1>A test of Equation References</h1>
 $$x+1\over\sqrt{1-x^2}\label{ref2}$$
 More math:
 $$x+1\over\sqrt{1-x^2}$$
-Here is a ref inside math: $\ref{ref2}+1$ and text after it.
+Here is a ref inside math: \(\ref{ref2}+1\) and text after it.
 
 \begin{align} 
 x& = y_1-y_2+y_3-y_5+y_8-\dots