Fixed broken links in the documentation

doc/020_installation.md

@@ -264,7 +264,7 @@ system. The gamedata is searched at:
 - In *$HOME/.yq2*
 
 If you're a package maintainer, please look at our packaging guide at
-the [Packaging Guide](05_packaging.md).
+the [Packaging Guide](070_packaging.md).
 
 
 ## Compiling from source

doc/090_filelists.md

@@ -10,7 +10,7 @@ is complete.
 The game data. See inline comments (lines starting with #) for
 details. The gama data tree is the same on all platform. The
 executable may be placed in the tree or in an own directory.
-See the [02_installation.md](Installation Guide) for details.
+See the [Installation Guide](020_installation.md) for details.
 
 We're using the Windows notation in this list. It's the same
 for other platforms, but executables and libraries may have