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

* 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>

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

@@ -24,7 +24,7 @@ index named `shakespeare,` and the accounts data set, which has an index named
 . In the *Index pattern name* field, enter `shakes*`.
 +
 [role="screenshot"]
-image::images/tutorial-pattern-1.png[shakes* index patterns]
+image::images/tutorial-pattern-1.png[Image showing how to enter shakes* in Index Pattern Name field]
 
 . Click *Next step*.
 
@@ -48,4 +48,3 @@ contains the time series data.
 image::images/tutorial_index_patterns.png[All tutorial index patterns]
 
 
-