Merge pull request #4 from cketti/patch-1

Fix typo in the coaching slides

presentations/coaching/index.html

@@ -155,7 +155,7 @@ <h2>Questions are good!</h2>
           <ul>
             <li>Get people comfortable asking questions</li>
             <li>Emphasize that there is no such thing as "dumb" questions</li>
-            <li>Ask is learners have any questions</li>
+            <li>Ask if learners have any questions</li>
             <li>Give other learners the chance to try to answer that question</li>
             <li>Coding is collaboration - make sure learners understand that</li>
           </ul>