Trivial Bugfix: doc/gitian-building.md: Link to release-process needs to be updated

Section was renamed in c907f4d

Author: luke-jr

doc/gitian-building.md

@@ -336,7 +336,7 @@ There will be a lot of warnings printed during the build of the image. These can
 Getting and building the inputs
 --------------------------------
 
-Follow the instructions in [doc/release-process.md](release-process.md#fetch-and-build-inputs-first-time-or-when-dependency-versions-change)
+Follow the instructions in [doc/release-process.md](release-process.md#fetch-and-create-inputs-first-time-or-when-dependency-versions-change)
 in the bitcoin repository under 'Fetch and create inputs' to install sources which require
 manual intervention. Also optionally follow the next step: 'Seed the Gitian sources cache
 and offline git repositories' which will fetch the remaining files required for building