Fix typos in some files (#8131)

Author: Edge-Seven

examples/src/examples/graphics/portal.example.mjs

@@ -204,7 +204,7 @@ assetListLoader.load(() => {
     portalEntity.setLocalScale(0.02, 0.02, 0.02);
     group.addChild(portalEntity);
 
-    // Create a statue entity, whic is visible inside the portal only
+    // Create a statue entity, which is visible inside the portal only
     const statue = assets.statue.resource.instantiateRenderEntity();
     statue.addComponent('script');
     statue.script.create('portalGeometry', {
@@ -216,7 +216,7 @@ assetListLoader.load(() => {
     statue.setLocalScale(0.25, 0.25, 0.25);
     group.addChild(statue);
 
-    // Create a bitmoji entity, whic is visible outside the portal only
+    // Create a bitmoji entity, which is visible outside the portal only
     const bitmoji = assets.bitmoji.resource.instantiateRenderEntity();
     bitmoji.addComponent('script');
     bitmoji.script.create('portalGeometry', {

examples/src/examples/graphics/reflection-box.example.mjs

@@ -289,7 +289,7 @@ assetListLoader.load(() => {
         farClip: 500
     });
 
-    // Add a cubemap renderer script, which renders to a cubemap of size 128 with mipmaps, which is directly useable
+    // Add a cubemap renderer script, which renders to a cubemap of size 128 with mipmaps, which is directly usable
     // as a lighting source for envAtlas generation
     // Position it in the center of the room.
     probe.script.create('cubemapRenderer', {