Disable ydb/docs RECURSE (#14470)

Author: maximyurchuk

ydb/ya.make

@@ -1,6 +1,5 @@
 RECURSE(
     apps
-    docs
     core
     library
     mvp
@@ -15,3 +14,11 @@ IF(NOT EXPORT_CMAKE)
     tests
   )
 ENDIF()
+
+IF(NOT OPENSOURCE)
+  # YFM tool is not supported 
+  # for OSS ya make yet
+  RECURSE(
+    docs
+  )
+ENDIF()