Merge pull request #518 from waywardmonkeys/fix-typo-in-template-tasks.json

Fix typo in comment in sample tasks.json.

src/vs/workbench/parts/tasks/common/taskSampleConfig.json

@@ -156,7 +156,7 @@
 }
 */
 // A task runner example that defines a problemMatcher inline instead of using
-// a predfined one.
+// a predefined one.
 /*
 {
 	"version": "0.1.0",