fix(rules): Code quality

Fixed small problems

modules/core/src/main/resources/resources/application.yml

@@ -1,2 +0,0 @@
-greeting:
-  message: "hello"

modules/core/src/main/resources/resources/import.sql

@@ -1,6 +0,0 @@
--- This file allow to write SQL commands that will be emitted in test and dev.
--- The commands are commented as their support depends of the database
--- insert into myentity (id, field) values(1, 'field-1');
--- insert into myentity (id, field) values(2, 'field-2');
--- insert into myentity (id, field) values(3, 'field-3');
--- alter sequence myentity_seq restart with 4;

modules/core/src/main/scala/de/nowchess/chess/config/JacksonConfig.scala

@@ -13,5 +13,5 @@ class JacksonConfig extends ObjectMapperCustomizer:
       override def version(): Version =
         // scalafix:off DisableSyntax.null
         new Version(2, 21, 1, null, "com.fasterxml.jackson.module", "jackson-module-scala")
-      // scalafix:on DisableSyntax.null
+        // scalafix:on DisableSyntax.null
     })