change semicolon to colon on secondary font bold line

Author: jasonlcrane

core/source/_patterns/00-atoms/01-global/01-fonts.mustache

@@ -3,4 +3,4 @@
 <p><strong>Primary font bold: "HelveticaNeue", "Helvetica", "Arial", sans-serif;</strong></p>
 <p class="font-secondary">Secondary font: Georgia, Times, "Times New Roman", serif;</p>
 <p class="font-secondary"><em>Secondary font italic: Georgia, Times, "Times New Roman", serif;</em></p>
-<p class="font-secondary"><strong>Secondary font bold; Georgia, Times, "Times New Roman", serif;</strong></p>
+<p class="font-secondary"><strong>Secondary font bold: Georgia, Times, "Times New Roman", serif;</strong></p>