Fix "preparing the build" chapter linking back as "next step"

src/getting_started/installing_the_toolchain.md

@@ -66,4 +66,4 @@ To install the toolchain, run the following commands:
 Next steps
 ----------
 
-Now that we have the build tools and the toolchain, we can finally [compile Redox](getting_started/compiling_redox.html)
+Now that we have the build tools and the toolchain, we can [prepare our build](getting_started/preparing_the_build.html).

src/getting_started/preparing_the_build.md

@@ -73,4 +73,4 @@ $ cargo install xargo
 Next steps
 ----------
 
-Once this is all set up, you can move on to [installing the toolchain](getting_started/installing_the_toolchain.html).
+Once this is all set up, we can finally [compile Redox](getting_started/compiling_redox.html).