Fix typos in fundamentals article

threejs/lessons/threejs-fundamentals.md

@@ -7,7 +7,7 @@ it as easy as possible to get 3D content on a webpage.
 
 Three.js is often confused with WebGL since more often than
 not, but not always, three.js uses WebGL to draw 3D.
-[WebGL is a very low-level system that only draws points, lines, and triangles](https://webglfundamentals.org). 
+[WebGL is a very low-level system that only draws points, lines, and triangles](https://webglfundamentals.org).
 To do anything useful with WebGL generally requires quite a bit of
 code and that is where three.js comes in. It handles stuff
 like scenes, lights, shadows, materials, textures, 3d math, all things that you'd
@@ -15,7 +15,7 @@ have to write yourself if you were to use WebGL directly.
 
 These tutorials assume you already know JavaScript and, for the
 most part they will use ES6 style. [See here for a
-terse list of things you're expected to already know](threejs-prerequisites.html). 
+terse list of things you're expected to already know](threejs-prerequisites.html).
 Most browsers that support three.js are auto-updated so most users should
 be able to run this code. If you'd like to make this code run
 on really old browsers look into a transpiler like [Babel](http://babel.io).
@@ -25,7 +25,7 @@ that can't run three.js.
 When learning most programming languages the first thing people
 do is make the computer print `"Hello World!"`. For 3D one
 of the most common first things to do is to make a 3D cube.
-so let's start with "Hello Cube!"
+So let's start with "Hello Cube!"
 
 The first thing we need is a `<canvas>` tag so
 
@@ -170,7 +170,7 @@ and passing it the scene and the camera
 renderer.render(scene, camera);
 ```
 
-Here's a working exmaple
+Here's a working example
 
 {{{example url="../threejs-fundamentals.html" }}}