Fixing comment typo.
@@ -281,7 +281,7 @@ public class BlocklyActivityHelper {
* core library does not include a factory implementation, and the app developer will need to
* include blockly vertical or another block rendering implementation.
* <p>
- * The default implementation atempts to instantiates a VerticalBlockViewFactory, which is
+ * The default implementation attempts to instantiates a VerticalBlockViewFactory, which is
* included in the blocklylib-vertical library. An error will be thrown unless
* blocklylib-vertical is included or this method is overridden to provide a custom
* BlockViewFactory.
