apply clippy suggestions

src/config.rs

@@ -41,7 +41,7 @@ pub enum DefaultNullOrder {
 }
 
 /// duckdb configuration
-/// Refer to https://github.com/duckdb/duckdb/blob/master/src/main/config.cpp
+/// Refer to <https://github.com/duckdb/duckdb/blob/master/src/main/config.cpp>
 #[derive(Default)]
 pub struct Config {
     config: Option<ffi::duckdb_config>,

src/vtab/arrow.rs

@@ -208,7 +208,6 @@ pub fn to_duckdb_logical_type(data_type: &DataType) -> Result<LogicalType, Box<d
 ///
 /// * `batch` - A reference to the `RecordBatch` to be converted to a `DataChunk`.
 /// * `chunk` - A mutable reference to the `DataChunk` to store the converted data.
-/// ```
 pub fn record_batch_to_duckdb_data_chunk(
     batch: &RecordBatch,
     chunk: &mut DataChunk,

src/vtab/logical_type.rs

@@ -6,7 +6,7 @@ use std::{
 use crate::ffi::*;
 
 /// Logical Type Id
-/// https://duckdb.org/docs/api/c/types
+/// <https://duckdb.org/docs/api/c/types>
 #[repr(u32)]
 #[derive(Debug, PartialEq, Eq)]
 pub enum LogicalTypeId {
@@ -109,7 +109,7 @@ impl From<u32> for LogicalTypeId {
 }
 
 /// DuckDB Logical Type.
-/// https://duckdb.org/docs/sql/data_types/overview
+/// <https://duckdb.org/docs/sql/data_types/overview>
 pub struct LogicalType {
     pub(crate) ptr: duckdb_logical_type,
 }

src/vtab/mod.rs

@@ -59,7 +59,7 @@ pub trait Free {
 /// Duckdb table function trait
 ///
 /// See to the HelloVTab example for more details
-/// https://duckdb.org/docs/api/c/table_functions
+/// <https://duckdb.org/docs/api/c/table_functions>
 pub trait VTab: Sized {
     /// The data type of the bind data
     type InitData: Sized + Free;