Remove docblock duplication.

src/Database/Driver/Mysql.php

@@ -31,7 +31,7 @@ class Mysql extends Driver
     use MysqlDialectTrait;
 
     /**
-     * @var int|null Maximum alias length or null if no limit
+     * @inheritDoc
      */
     protected const MAX_ALIAS_LENGTH = 256;
 

src/Database/Driver/Postgres.php

@@ -30,7 +30,7 @@ class Postgres extends Driver
     use PostgresDialectTrait;
 
     /**
-     * @var int|null Maximum alias length or null if no limit
+     * @inheritDoc
      */
     protected const MAX_ALIAS_LENGTH = 63;
 

src/Database/Driver/Sqlserver.php

@@ -32,7 +32,7 @@ class Sqlserver extends Driver
     use SqlserverDialectTrait;
 
     /**
-     * @var int|null Maximum alias length or null if no limit
+     * @inheritDoc
      */
     protected const MAX_ALIAS_LENGTH = 128;