fixup! chore: add make rules to pull in api docs assets and build antora

Author: coriolinus

Makefile

@@ -735,7 +735,7 @@ $(STAMPS)/docs-kotlin: $(JVM_LIB) $(jvm-deps) $(KOTLIN_SOURCES)
 	$(TOUCH_STAMP)
 
 .PHONY: docs-kotlin
-docs-kotlin: $(STAMPS/docs-kotlin) ## Generate Kotlin docs
+docs-kotlin: $(STAMPS)/docs-kotlin ## Generate Kotlin docs
 
 # TypeScript docs via Typedoc
 $(STAMPS)/docs-ts: $(BROWSER_OUT) $(TS_NATIVE_OUT)