Fix typo in Engine.runRenderLoop docs

src/babylon.engine.js

@@ -543,7 +543,7 @@ var BABYLON;
         };
         /**
          * Register and execute a render loop. The engine can have more than one render function.
-         * @param {Function} renderFunction - the function to continuesly execute starting the next render loop.
+         * @param {Function} renderFunction - the function to continuously execute starting the next render loop.
          * @example
          * engine.runRenderLoop(function () {
          *      scene.render()

src/babylon.engine.ts

@@ -666,7 +666,7 @@
 
         /**
          * Register and execute a render loop. The engine can have more than one render function.
-         * @param {Function} renderFunction - the function to continuesly execute starting the next render loop.
+         * @param {Function} renderFunction - the function to continuously execute starting the next render loop.
          * @example
          * engine.runRenderLoop(function () {
          *      scene.render()