Fix typos in jme3_ai.adoc (#120)

Fixing typo of "dispalying" to "displaying" and "//comput ..." to "//compute ..."

docs/modules/contributions/pages/ai/jme3_ai.adoc

@@ -353,7 +353,7 @@ picked = navControl;
 [NOTE]
 
 ====
-This tutorial uses a custom control, `NavigationControl`, that extends the `NavMeshPathfinder` class. As this is a tutorial, some extra variables are used for dispalying the navigation path and are not needed. The constructor for `NavMeshPathfinder` requires just the the passing of the `NavMesh` object, which makes for a cleaner control.
+This tutorial uses a custom control, `NavigationControl`, that extends the `NavMeshPathfinder` class. As this is a tutorial, some extra variables are used for displaying the navigation path and are not needed. The constructor for `NavMeshPathfinder` requires just the the passing of the `NavMesh` object, which makes for a cleaner control.
 
 [source, java]
 ----
@@ -543,7 +543,7 @@ private void startPathFinder() {
             warpInside(target);
             System.out.println("Target " + target);
             boolean success;
-            //comput the path
+            //compute the path
             success = computePath(target);
             System.out.println("SUCCESS = " + success);
             if (success) {