Update document generation script

operators/split-into-documents.md

@@ -3,37 +3,29 @@
 This operator splits all matches into separate documents
 
 ## Split empty
-
 Running
-
 ```bash
 yq eval --null-input 'splitDoc'
 ```
-
 will output
-
 ```yaml
+
 ```
 
 ## Split array
-
 Given a sample.yml file of:
-
 ```yaml
 - a: cat
 - b: dog
 ```
-
 then
-
 ```bash
 yq eval '.[] | splitDoc' sample.yml
 ```
-
 will output
-
 ```yaml
 a: cat
 ---
 b: dog
 ```
+