Update application.properties (#10078)

Optimize datasource name configuration reading

distribution/conf/application.properties

@@ -32,7 +32,9 @@ server.port=8848
 
 #*************** Config Module Related Configurations ***************#
 ### If use MySQL as datasource:
+### Deprecated configuration property, it is recommended to use `spring.sql.init.platform` replaced.
 # spring.datasource.platform=mysql
+# spring.sql.init.platform=mysql
 
 ### Count of DB:
 # db.num=1
@@ -257,4 +259,4 @@ nacos.istio.mcp.server.enabled=false
 #nacos.remote.server.grpc.cluster.keep-alive-timeout=20000
 
 ## Sets a time(milliseconds) that specify the most aggressive keep-alive time clients are permitted to configure. The typical default is 5 minutes
-#nacos.remote.server.grpc.cluster.permit-keep-alive-time=300000
+#nacos.remote.server.grpc.cluster.permit-keep-alive-time=300000