Update tutorial-define-index.asciidoc (#76973) (#78614)

* Update tutorial-define-index.asciidoc

* Update docs/getting-started/tutorial-define-index.asciidoc

Co-authored-by: Kaarina Tungseth <kaarina.tungseth@elastic.co>

Co-authored-by: Raya Fratkina <raya.fratkina@elastic.co>
Co-authored-by: Kaarina Tungseth <kaarina.tungseth@elastic.co>
# Conflicts:
#	docs/getting-started/tutorial-define-index.asciidoc

Co-authored-by: ncheckin <68351161+ncheckin@users.noreply.github.com>

Author: KOTungseth

docs/getting-started/tutorial-define-index.asciidoc

@@ -24,7 +24,7 @@ Otherwise, click *Create index pattern*.
 . In the *Index pattern field*, enter `shakes*`.
 +
 [role="screenshot"]
-image::images/tutorial-pattern-1.png[]
+image::images/tutorial-pattern-1.png[Image showing how to enter shakes* in Index Pattern Name field]
 
 . Click *Next step*.
 . Select the *Time Filter field name*, then click *Create index pattern*.
@@ -50,4 +50,3 @@ available, open the menu, then go to *Dev Tools > Console* and enter `GET _cat/i
 `curl -XGET "http://localhost:9200/_cat/indices"`.
 
 
-