Fix initialization error

Author: kderusso

x-pack/plugin/esql/qa/testFixtures/src/main/resources/extract-snippets-function.csv-spec

@@ -6,26 +6,40 @@ extractSnippetsWithField
 required_capability: extract_snippets_function
 
 // tag::extract-snippets-with-field[]
+FROM books
+| EVAL snippets = extract_snippets(description, "crowning achievement", 1, 25)
+// end::extract-snippets-with-field[]
+| KEEP book_no, author, title, snippets
+| SORT book_no
+| LIMIT 1
+;
+
+// tag::extract-snippets-with-field-result[]
+book_no:keyword | author:text       | title:text             | snippets:keyword
+1211            | Fyodor Dostoevsky | The brothers Karamazov | achievement of perhaps the
+// end::extract-snippets-with-field-result[]
+;
+
+extractSnippetsWithMatch
+required_capability: extract_snippets_function
+
 FROM books
 | WHERE MATCH(description, "hobbit")
 | EVAL snippets = extract_snippets(description, "hobbit", 1, 25)
-// end::extract-snippets-with-field[]
 | KEEP book_no, author, title, snippets
 | SORT book_no
 | LIMIT 5
 ;
 
-// tag::extract-snippets-with-field-result[]
 book_no:keyword | author:text               | title:text                                                       | snippets:keyword
 1463            | J. R. R. Tolkien          | Realms of Tolkien: Images of Middle-earth                        | appropriate passage from The Hobbit
 2301            | John Ronald Reuel Tolkien | Smith of Wootton Major & Farmer Giles of Ham                     | beloved author of THE HOBBIT
 2675            | J.R.R. Tolkien            | The Lord of the Rings - Boxed Set                                | Bilbo Baggins is a hobbit
 2714            | J. R. R. Tolkien          | Return of the King Being the Third Part of The Lord of the Rings | the story begun in The Hobbit
 2936            | John Ronald Reuel Tolkien | Fellowship of the Ring 2ND Edition                               | into the hands of the hobbit
-// end::extract-snippets-with-field-result[]
 ;
 
-extractMultipleSnippetsWithField
+extractMultipleSnippetsWithMatch
 required_capability: extract_snippets_function
 
 FROM books
@@ -45,7 +59,7 @@ book_no:keyword | author:text               | title:text
 ;
 
 
-extractMultipleSnippetsWithFieldMvExpand
+extractMultipleSnippetsWithMatchMvExpand
 required_capability: extract_snippets_function
 
 FROM books
@@ -83,10 +97,3 @@ book_no:keyword | author:text                                        | title:tex
 2883            | William Faulkner                                   | A Summer of Faulkner: As I Lay Dying/The Sound and the Fury/Light in August (Oprah's Book Club) | null
 3293            | Danny Faulkner                                     | Universe by Design                                                                              | null
 ;
-
-
-extractSnippetsWithDefaultNumSnippetsAndLength
-required_capability: extract_snippets_function
-
-extractSnippetsCalledMultipleTimes
-required_capability: extract_snippets_function