Skylark -> Starlark comment and doc updates

- Also a few string literals.

There's lots more, so I'm breaking this into chunks.

PiperOrigin-RevId: 305900457
diff --git a/src/main/java/com/google/devtools/build/lib/packages/Attribute.java b/src/main/java/com/google/devtools/build/lib/packages/Attribute.java
index 3ff28d9..439b8c2 100644
--- a/src/main/java/com/google/devtools/build/lib/packages/Attribute.java
+++ b/src/main/java/com/google/devtools/build/lib/packages/Attribute.java
@@ -638,7 +638,7 @@
     }
 
     /**
-     * See value(TYPE) above. This method is only meant for Skylark usage.
+     * See value(TYPE) above. This method is only meant for Starlark usage.
      *
      * <p>The parameter {@code context} is relevant iff the default value is a Label string. In this
      * case, {@code context} must point to the parent Label in order to be able to convert the