style: align PostgreSQL feature comment with formatter

Apply the single comment placement required by Spotless after merging
upstream. Java tokens are unchanged.

Validation: targeted spotlessJavaCheck and git diff --check pass.

Author: minleejae

src/main/java/net/sf/jsqlparser/util/validation/feature/PostgresqlVersion.java

@@ -130,8 +130,7 @@ public enum PostgresqlVersion implements Version {
                     // https://www.postgresql.org/docs/current/sql-createconversion.html
                     // https://www.postgresql.org/docs/current/sql-alterconversion.html
                     Feature.createCast, Feature.createTransform, Feature.createConversion,
-                    Feature.alterConversion,
-                    // https://www.postgresql.org/docs/current/sql-createoperator.html
+                    Feature.alterConversion, // https://www.postgresql.org/docs/current/sql-createoperator.html
                     // https://www.postgresql.org/docs/current/sql-createopclass.html
                     // https://www.postgresql.org/docs/current/sql-createopfamily.html
                     // https://www.postgresql.org/docs/current/sql-createaggregate.html