Polish

Author: philwebb

spring-boot-project/spring-boot-docs/src/docs/asciidoc/features/external-config.adoc

@@ -945,8 +945,7 @@ Support for binding from environment variables is applied to the `systemEnvironm
 
 
 [[features.external-config.typesafe-configuration-properties.relaxed-binding.maps-from-environment-variables]]
-===== Binding Maps from environment variables
-
+===== Binding Maps From Environment Variables
 When Spring Boot binds an environment variable to a property class, it lowercases the environment variable name before binding.
 Most of the time this detail isn't important, except when binding to `Map` properties.