Wrong Answer in Example of stringcontains

### Before you submit

- [x] This issue is about a documentation page, flow, or piece of content.

### Type of issue

Inaccurate

### What documentation page or section is affected

https://www.elastic.co/docs/reference/query-languages/eql/eql-function-ref

### What happened?

Hello there i was just reading the docs to learn about eql function and ended with the example of stringContains

// process.command_line = "start regsvr32.exe"

the example was // Make matching case-insensitive
stringContains~(process.command_line, "Regsvr32") 5

5 returns false
The answer below showed False while the answer should be correct.

### Additional info

_No response_

Open the EQL function reference at https://www.elastic.co/docs/reference/query-languages/eql/eql-function-ref and locate the stringContains case-insensitive example. Verify the displayed result for the provided process.command_line value and update the example's answer so it matches the documented function behavior.

Written by the indexing model from the issue text.