[7.17] [DOCS] Includes source_branch in docs index

Author: szabosteve

docs/index.asciidoc

@@ -1,6 +1,6 @@
 = Elasticsearch JavaScript Client
 
-:branch: 7.16
+include::{asciidoc-dir}/../../shared/versions/stack/{source_branch}.asciidoc[]
 include::{asciidoc-dir}/../../shared/attributes.asciidoc[]
 
 include::introduction.asciidoc[]

docs/reference.asciidoc

@@ -3510,7 +3510,7 @@ link:{ref}/modules-scripting.html[Documentation] +
 ----
 client.getScriptContext()
 ----
-link:https://www.elastic.co/guide/en/elasticsearch/painless/master/painless-contexts.html[Documentation] +
+link:https://www.elastic.co/guide/en/elasticsearch/painless/7.17/painless-contexts.html[Documentation] +
 
 
 [discrete]
@@ -9127,7 +9127,7 @@ client.scriptsPainlessExecute({
   body: object
 })
 ----
-link:https://www.elastic.co/guide/en/elasticsearch/painless/master/painless-execute-api.html[Documentation] +
+link:https://www.elastic.co/guide/en/elasticsearch/painless/7.17/painless-execute-api.html[Documentation] +
 [cols=2*]
 |===
 |`body`