Update javadoc in tregex & semgrex (from Claude) so as to not produce javadoc warnings any more

Author: AngledLuffa

src/edu/stanford/nlp/semgraph/ISemanticGraphEdgeEql.java

@@ -7,6 +7,15 @@
  *
  */
 public interface ISemanticGraphEdgeEql {
+  /**
+   * Compares two edges for equality under this implementation's notion of equality.
+   *
+   * @param edge1 the first edge
+   * @param edge2 the second edge
+   * @param sg1 the graph containing {@code edge1}
+   * @param sg2 the graph containing {@code edge2}
+   * @return whether the two edges are considered equal
+   */
   public boolean equals(SemanticGraphEdge edge1, SemanticGraphEdge edge2,
         SemanticGraph sg1, SemanticGraph sg2);