[DOCS] _id is required for bulk API's update action (elastic#79774) (elastic#79821)

Fixes a doc bug introduced in elastic#55414.

Author: jrodewig

docs/reference/docs/bulk.asciidoc

@@ -293,8 +293,7 @@ Removes the specified document from the index.
 include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=bulk-index]
 
 `_id`::
-(Required, string) 
-The document ID.
+(Required, string) The document ID.
 
 include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=bulk-require-alias]
 --
@@ -321,7 +320,8 @@ The following line must contain the partial document and update options.
 --
 include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=bulk-index]
 
-include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=bulk-id]
+`_id`::
+(Required, string) The document ID.
 
 include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=bulk-require-alias]
 --