Fix sqllogictests links in contributor-guide/index.md and README.md (#…

…8314)

The crate was moved so the links need to be updated

datafusion/sqllogictest/README.md

@@ -240,7 +240,7 @@ query <type_string> <sort_mode>
   - NULL values are rendered as `NULL`,
   - empty strings are rendered as `(empty)`,
   - boolean values are rendered as `true`/`false`,
-  - this list can be not exhaustive, check the `datafusion/core/tests/sqllogictests/src/engines/conversion.rs` for
+  - this list can be not exhaustive, check the `datafusion/sqllogictest/src/engines/conversion.rs` for
     details.
 - `sort_mode`: If included, it must be one of `nosort` (**default**), `rowsort`, or `valuesort`. In `nosort` mode, the
   results appear in exactly the order in which they were received from the database engine. The `nosort` mode should

docs/source/contributor-guide/index.md

@@ -151,7 +151,7 @@ Tests for code in an individual module are defined in the same source file with
 
 ### sqllogictests Tests
 
-DataFusion's SQL implementation is tested using [sqllogictest](https://github.com/apache/arrow-datafusion/tree/main/datafusion/core/tests/sqllogictests) which are run like any other Rust test using `cargo test --test sqllogictests`.
+DataFusion's SQL implementation is tested using [sqllogictest](https://github.com/apache/arrow-datafusion/tree/main/datafusion/sqllogictest) which are run like any other Rust test using `cargo test --test sqllogictests`.
 
 `sqllogictests` tests may be less convenient for new contributors who are familiar with writing `.rs` tests as they require learning another tool. However, `sqllogictest` based tests are much easier to develop and maintain as they 1) do not require a slow recompile/link cycle and 2) can be automatically updated via `cargo test --test sqllogictests -- --complete`.
 
@@ -243,8 +243,8 @@ Below is a checklist of what you need to do to add a new aggregate function to D
   - a new line in `signature` with the signature of the function (number and types of its arguments)
   - a new line in `create_aggregate_expr` mapping the built-in to the implementation
   - tests to the function.
-- In [core/tests/sqllogictests/test_files](../../../datafusion/core/tests/sqllogictests/test_files), add new `sqllogictest` integration tests where the function is called through SQL against well known data and returns the expected result.
-  - Documentation for `sqllogictest` [here](../../../datafusion/core/tests/sqllogictests/README.md)
+- In [sqllogictest/test_files](../../../datafusion/sqllogictest/test_files), add new `sqllogictest` integration tests where the function is called through SQL against well known data and returns the expected result.
+  - Documentation for `sqllogictest` [here](../../../datafusion/sqllogictest/README.md)
 - Add SQL reference documentation [here](../../../docs/source/user-guide/sql/aggregate_functions.md)
 
 ### How to display plans graphically