Polish HTTP/2 Cleartext documentation

See gh-23816
Closes gh-23820

Author: metacubed

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

@@ -598,7 +598,7 @@ This support depends on the chosen web server and the application environment, s
 [NOTE]
 ====
 Spring Boot does not advise using `h2c`, the cleartext version of the HTTP/2 protocol.
-As a result, the next sections require to <<howto-configure-ssl, configure SSL first>>.
+As a result, the following sections require you to <<howto-configure-ssl, configure SSL first>>.
 If you still choose to use `h2c`, you can check <<howto-configure-http2-h2c, the dedicated section>>.
 ====
 
@@ -652,8 +652,8 @@ As of Undertow 1.4.0+, HTTP/2 is supported without any additional requirement on
 
 
 [[howto-configure-http2-h2c]]
-==== h2c with supported servers
-To enable `h2c`, you need to leave the configprop:server.http2.enabled[] property set to `false`,
+==== HTTP/2 Cleartext with supported servers
+To enable HTTP/2 with cleartext support, you need to leave the `configprop:server.http2.enabled[]` property set to `false`,
 and instead apply a customizer specific to your choice of server:
 
 For Tomcat, we need to add an upgrade protocol:
@@ -709,7 +709,6 @@ For Undertow, we need to enable the HTTP2 option:
 
 
 
-
 [[howto-configure-webserver]]
 === Configure the Web Server
 Generally, you should first consider using one of the many available configuration keys and customize your web server by adding new entries in your `application.properties` (or `application.yml`, or environment, etc. see "`<<howto-discover-build-in-options-for-external-properties>>`").