fix: spring conf

spring-reactor/src/main/resources/application.yml

 spring:
   application:
-    name: spring-reactor-mongo
+    name: codingdojo-spring-reactor
   data:
     mongodb:
-      database: spring-reactor-mongomongo
+      database: codingdojo-spring-reactor
       port: 27017
       reactive-repositories:
         enabled: true