fix spotless apply

Signed-off-by: Jialiang Liang <jiallian@amazon.com>

Author: RyanL1997

core/src/main/java/org/opensearch/sql/expression/function/PPLFuncImpTable.java

@@ -160,6 +160,7 @@
 import static org.opensearch.sql.expression.function.BuiltinFunctionName.RAND;
 import static org.opensearch.sql.expression.function.BuiltinFunctionName.REDUCE;
 import static org.opensearch.sql.expression.function.BuiltinFunctionName.REGEXP;
+import static org.opensearch.sql.expression.function.BuiltinFunctionName.REGEX_MATCH;
 import static org.opensearch.sql.expression.function.BuiltinFunctionName.REPLACE;
 import static org.opensearch.sql.expression.function.BuiltinFunctionName.REVERSE;
 import static org.opensearch.sql.expression.function.BuiltinFunctionName.RIGHT;