Fix scalar_functions.md for CI

[goldmedal]

Which issue does this PR close?

Closes #.

Rationale for this change

I'm not sure why #13324 changed the format of the code scope in scalar_functions.md but it causes the CI for checking the md file to fail.

Rust / check configs.md and ***_functions.md is up-to-date (pull_request) 

I found 2 PRs have been impacted:

• Improve the coverage of bit_length testing #13336
• Enable clone_on_ref_ptr clippy lint on core crate #13338

What changes are included in this PR?

Reformat scalar_functions.md

Are these changes tested?

Checked by CI

Are there any user-facing changes?

no

[Weijun-H]

After some investigation, we can fix this issue through this modification.

datafusion/datafusion/functions-nested/src/map.rs

Lines 263 to 291 in c48f12d

	.with_sql_example(
	r#"```sql
	-- Using map function
	SELECT MAP('type', 'test');
	----
	{type: test}
	SELECT MAP(['POST', 'HEAD', 'PATCH'], [41, 33, null]);
	----
	{POST: 41, HEAD: 33, PATCH: }
	SELECT MAP([[1,2], [3,4]], ['a', 'b']);
	----
	{[1, 2]: a, [3, 4]: b}
	SELECT MAP { 'a': 1, 'b': 2 };
	----
	{a: 1, b: 2}
	-- Using make_map function
	SELECT MAKE_MAP(['POST', 'HEAD'], [41, 33]);
	----
	{POST: 41, HEAD: 33}
	SELECT MAKE_MAP(['key1', 'key2'], ['value1', null]);
	----
	{key1: value1, key2: }
	```"#
	)

                    .with_sql_example(
r#"
```sql
-- Using map function
SELECT MAP('type', 'test');
----
{type: test}

SELECT MAP(['POST', 'HEAD', 'PATCH'], [41, 33, null]);
----
{POST: 41, HEAD: 33, PATCH: }

SELECT MAP([[1,2], [3,4]], ['a', 'b']);
----
{[1, 2]: a, [3, 4]: b}

SELECT MAP { 'a': 1, 'b': 2 };
----
{a: 1, b: 2}

-- Using make_map function
SELECT MAKE_MAP(['POST', 'HEAD'], [41, 33]);
----
{POST: 41, HEAD: 33}

SELECT MAKE_MAP(['key1', 'key2'], ['value1', null]);
----
{key1: value1, key2: }
```"#,
                    )

[tlm365]

After some investigation, we can fix this issue through this modification.

I also prefer this, it makes the sql example more consistent (no start with tab/spaces)

[goldmedal]

Thanks, @Weijun-H and @tlm365. It makes sense to me 👍

[jonahgao]

Merged to get CI green