Mesa (master): docs: Fix typo

[Carl Worth]

Module: Mesa
Branch: master
Commit: 16c2919972bb477e6c0fd025eca450259c6a78e2
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=16c2919972bb477e6c0fd025eca450259c6a78e2

Author: Carl Worth <cworth at cworth.org>
Date:   Thu Dec 12 23:02:54 2013 -0800

docs: Fix typo

Simply replacing Extentions with the correct Extensions.

---

 docs/devinfo.html |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/docs/devinfo.html b/docs/devinfo.html
index b495097..38c052a 100644
--- a/docs/devinfo.html
+++ b/docs/devinfo.html
@@ -17,7 +17,7 @@
 <h1>Development Notes</h1>
 
 
-<h2>Adding Extentions</h2>
+<h2>Adding Extensions</h2>
 
 <p>
 To add a new GL extension to Mesa you have to do at least the following.