Try to fix docs tree (#539)

* Update docs

docs/BUILD_WINDOWS.md

@@ -1,3 +1,5 @@
+@subpage basics "Compiling"
+
 ## Compiling mk64 Decomp In Windows
 
 ***This method is not recommended nor supported. However, it is the only solution to build in W7/W8. WSL is the path of least resistance, use that not this***

docs/Understanding the Basics/Basic Concepts.md

@@ -1,3 +1,4 @@
+@page basics "Understanding the Basics"
 #### Definitions
 * `Jump/Branch/Function` - Tells the cpu to execute instructions somewhere else and come back here when done.
 * `Hexadecimal` - A [numbering system](https://en.wikipedia.org/wiki/Hexadecimal) just like decimal (also called base-ten) or roman numerals. An easy method for programmers and computers to understand each other which groups/separates bytes of information in a readable format. Representing information as decimal results in an unreadable mess.

docs/Understanding the Basics/index.md

@@ -1 +1,2 @@
-# Understanding the Basics
+@subpage basics "test"
+# test