Move to troubleshooting

Author: Julien Debon

docs/configuration.md

@@ -216,12 +216,6 @@ dependencies:
   - someDep
 ```
 
-### Common problems
-
-#### Multi Cradle: No prefixes matched
-The error message `Multi Cradle: No prefixes matched` usually means that implicit configuration failed.
-In that case, you must use explicit configuration.
-
 ### How to show local documentation on hover
 
 Haskell Language Server can display Haddock documentation on hover and completions if the project and

docs/troubleshooting.md

@@ -165,6 +165,10 @@ The server log will show which cradle is being chosen.
 
 Using an explicit `hie.yaml` to configure the cradle can resolve the problem, see the [configuration page](./configuration.md#configuring-your-project-build).
 
+### Multi Cradle: No prefixes matched
+The error message `Multi Cradle: No prefixes matched` usually means that implicit configuration failed.
+In that case, you must use [explicit configuration](./configuration.md#configuring-your-project-build).
+
 ### Static binaries
 
 Static binaries use the GHC linker for dynamically loading dependencies when typechecking Template Haskell code, and this can run into issues when loading shared objects linked against mismatching system libraries, or into GHC linker  bugs (mainly the Mach linker used in Mac OS, but also potentially the ELF linker).