Update README.md

Author: alamb

README.md

@@ -100,13 +100,18 @@ similar semantics are represented with the same AST. We welcome PRs to fix such
 issues and distinguish different syntaxes in the AST.
 
 
-## WIP: Extracting source locations from AST nodes
+## Source Locations (Work in Progress)
 
-This crate allows recovering source locations from AST nodes via the [Spanned](https://docs.rs/sqlparser/latest/sqlparser/ast/trait.Spanned.html) trait, which can be used for advanced diagnostics tooling. Note that this feature is a work in progress and many nodes report missing or inaccurate spans. Please see [this document](./docs/source_spans.md#source-span-contributing-guidelines) for information on how to contribute missing improvements.
+This crate allows recovering source locations from AST nodes via the [Spanned]
+trait, which can be used for advanced diagnostics tooling. Note that this
+feature is a work in progress and many nodes report missing or inaccurate spans.
+Please see [this document] for information on how to contribute missing
+improvements.
 
-```rust
-use sqlparser::ast::Spanned;
+[Spanned]: https://docs.rs/sqlparser/latest/sqlparser/ast/trait.Spanned.html
+[this document]: ./docs/source_spans.md#source-span-contributing-guidelines
 
+```rust
 // Parse SQL
 let ast = Parser::parse_sql(&GenericDialect, "SELECT A FROM B").unwrap();