actually provide the alt mappings profileLabels in the proper API spot

this fixes the issues with Pelsin's UI change, which was immaculately
done and only thwarted by my bugs =)

src/configs/webconfig.cpp

@@ -614,7 +614,7 @@ std::string getProfileOptions()
         writePinDoc(i, "pin27", profileOptions.gpioMappingsSets[i].pins[27]);
         writePinDoc(i, "pin28", profileOptions.gpioMappingsSets[i].pins[28]);
         writePinDoc(i, "pin29", profileOptions.gpioMappingsSets[i].pins[29]);
-        writeDoc(doc, i, "profileLabel", profileOptions.gpioMappingsSets[i].profileLabel);
+        writeDoc(doc, "alternativePinMappings", i, "profileLabel", profileOptions.gpioMappingsSets[i].profileLabel);
     }
 
     return serialize_json(doc);