Tidy up

docs/lectures/graphics/02_opengl_glfw_glad.md

@@ -4,7 +4,7 @@
 
 1. Make a window and a context
 
-   - This is OS specific, therefore we need GLFW to set this up for us
+    - This is OS specific, therefore we need GLFW to set this up for us
 
 2. Load all OpenGL methods (GLAD)
 
@@ -12,9 +12,8 @@
 
 4. Specify vertices (C)
 
-5. Setup objects to communicate to the shaders (OpenGL)
+5. Set up objects to communicate with the shaders (OpenGL)
 
 6. Render loop (OpenGL)
 
 7. Deinitialisation (GLFW)
-