Merge pull request #182 from FirelyTeam/alexzautke-patch-1

Update link to FHIR Mapper docs

index.rst

@@ -12,7 +12,7 @@ On this site you will find the documentation for various FHIR tools and SDKs.
    Firely Server - FHIR server <firelyserver/index>
    Firely .NET SDK - Open Source FHIR library <https://docs.fire.ly/projects/Firely-NET-SDK>
    Firely Terminal (Torinox) - Command-line FHIR tool <https://docs.fire.ly/projects/Firely-Terminal>
-   FHIR Mapper - Engine for the FHIR Mapping Language <mappingengine/index>
+   FHIR Mapper - Engine for the FHIR Mapping Language <https://docs.fire.ly/projects/FHIR-Mapper/>
    VonkLoader - Bulk upload resources to any FHIR server <vonkloader/index>
 
 .. list-table:: Product and FHIR Versions Overview