Merge pull request #15859 from matthiasstock

* pr/15859:
  Polish contribution
  Polish 'Database Initialization' section

Author: snicoll

spring-boot-project/spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -2186,6 +2186,7 @@ reused to provide similar features to what the auto-configuration does with a si
 == Database Initialization
 An SQL database can be initialized in different ways depending on what your stack is.
 Of course, you can also do it manually, provided the database is a separate process.
+It is recommended to use a single mechanism for schema generation.