Update curations/go/golang/golang.org%2Fx/tools.yaml

Author: clearlydefinedbot

curations/go/golang/golang.org/x/tools.yaml

@@ -1,9 +1,12 @@
 coordinates:
   name: tools
-  namespace: golang.org%2fx
+  namespace: golang.org%2Fx
   provider: golang
   type: go
 revisions:
+  v0.0.0-20180221164845-07fd8470d635:
+    licensed:
+      declared: BSD-3-Clause
   v0.0.0-20200619180055-7c47624df98f:
     licensed:
       declared: BSD-3-Clause AND LicenseRef-scancode-google-patent-license-golang