Use tabs in samples

- Use tabbing model from a new docs backend.
- Relates #637

Author: jvalkeal

spring-shell-docs/src/main/asciidoc/using-shell-options-short.adoc

@@ -5,54 +5,42 @@ ifndef::snippets[:snippets: ../../test/java/org/springframework/shell/docs]
 Short style _POSIX_ option is usually just a synonym to long format. As
 shown below option `--arg` is equal to `-a`.
 
-[tabs]
-====
-Programmatic::
-+
-[source, java, indent=0]
+[source,java,indent=0,role="primary"]
+.Programmatic
 ----
 include::{snippets}/ShortOptionSnippets.java[tag=option-type-string-programmatic]
 ----
 
-Annotation::
-+
-[source, java, indent=0]
+[source,java,indent=0,role="secondary"]
+.Annotation
 ----
 include::{snippets}/ShortOptionSnippets.java[tag=option-type-string-annotation]
 ----
 
-Legacy Annotation::
-+
-[source, java, indent=0]
+[source,java,indent=0,role="secondary"]
+.Legacy Annotation
 ----
 include::{snippets}/ShortOptionSnippets.java[tag=option-type-string-legacyannotation]
 ----
-====
 
 Short option with combined format is powerful if type is defined as a flag
 which means type is a _boolean_. That way you can define a presence of a flags
 as `-abc`, `-abc true` or `-abc false`.
 
-[tabs]
-====
-Programmatic::
-+
-[source, java, indent=0]
+[source,java,indent=0,role="primary"]
+.Programmatic
 ----
 include::{snippets}/ShortOptionSnippets.java[tag=option-type-multiple-booleans-programmatic]
 ----
 
-Annotation::
-+
-[source, java, indent=0]
+[source,java,indent=0,role="secondary"]
+.Annotation
 ----
 include::{snippets}/ShortOptionSnippets.java[tag=option-type-multiple-booleans-annotation]
 ----
 
-Legacy Annotation::
-+
-[source, java, indent=0]
+[source,java,indent=0,role="secondary"]
+.Legacy Annotation
 ----
 include::{snippets}/ShortOptionSnippets.java[tag=option-type-multiple-booleans-legacyannotation]
 ----
-====