[Docs] Update api.asciidoc (elastic#29166)

The parent page has the same title, and the URL path indicates this is about API changes, so include "API" in the title.
jasontedor · Mar 21, 2018 · 08c5309 · 08c5309
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commit 08c5309
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/reference/migration/migrate_7_0/api.asciidoc b/docs/reference/migration/migrate_7_0/api.asciidoc
@@ -1,5 +1,5 @@
 [[breaking_70_api_changes]]
-=== Breaking changes in 7.0
+=== Breaking API changes in 7.0
 
 ==== Camel case and underscore parameters deprecated in 6.x have been removed
 A  number of duplicate parameters deprecated in 6.x have been removed from