bazel syntax: rename ASTNode to Node and SyntaxTreeVisitor to NodeVisitor

PiperOrigin-RevId: 269332155
diff --git a/src/main/java/com/google/devtools/build/lib/syntax/Parameter.java b/src/main/java/com/google/devtools/build/lib/syntax/Parameter.java
index 0b0f37b..3361add 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/Parameter.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/Parameter.java
@@ -199,7 +199,7 @@
 
   @Override
   @SuppressWarnings("unchecked")
-  public void accept(SyntaxTreeVisitor visitor) {
+  public void accept(NodeVisitor visitor) {
     visitor.visit((Parameter<Expression, Expression>) this);
   }
 }