Fixes typo in webgl.js

src/display/webgl.js

@@ -67,7 +67,7 @@ var WebGLUtils = (function WebGLUtilsClosure() {
   }
 
   var currentGL, currentCanvas;
-  function generageGL() {
+  function generateGL() {
     if (currentGL) {
       return;
     }
@@ -125,7 +125,7 @@ var WebGLUtils = (function WebGLUtilsClosure() {
   function initSmaskGL() {
     var canvas, gl;
 
-    generageGL();
+    generateGL();
     canvas = currentCanvas;
     currentCanvas = null;
     gl = currentGL;
@@ -257,7 +257,7 @@ var WebGLUtils = (function WebGLUtilsClosure() {
   function initFiguresGL() {
     var canvas, gl;
 
-    generageGL();
+    generateGL();
     canvas = currentCanvas;
     currentCanvas = null;
     gl = currentGL;
@@ -425,7 +425,7 @@ var WebGLUtils = (function WebGLUtilsClosure() {
       }
       var enabled = false;
       try {
-        generageGL();
+        generateGL();
         enabled = !!currentGL;
       } catch (e) { }
       return shadow(this, 'isEnabled', enabled);