Reformat bullet list of indexers to make it easier to update and read

Author: olafurpg

Readme.md

@@ -33,11 +33,14 @@ Also, check out the [Debugging section][] in the Development docs.
 ## Tools using SCIP
 
 Several indexers currently emit SCIP data:
-[scip-java](https://github.com/sourcegraph/scip-java) (for Java, Kotlin and Scala),
-[scip-typescript](https://github.com/sourcegraph/scip-typescript),
-[scip-python](https://github.com/sourcegraph/scip-python),
-[scip-ruby](https://github.com/sourcegraph/scip-ruby) and
-[rust-analyzer](https://github.com/sourcegraph/rust-analyzer).
+
+* [scip-java](https://github.com/sourcegraph/scip-java): Java, Scala, Kotlin
+* [scip-typescript](https://github.com/sourcegraph/scip-typescript): TypeScript, JavaScript
+* [rust-analyzer](https://github.com/sourcegraph/rust-analyzer): Rust
+* [scip-ruby](https://github.com/sourcegraph/scip-clang): C++, C
+* [scip-ruby](https://github.com/sourcegraph/scip-ruby): Sorbet, Ruby
+* [scip-python](https://github.com/sourcegraph/scip-python): Python
+* [scip-dotnet](https://github.com/sourcegraph/scip-dotnet): C#, Visual Basic
 
 For more details about indexers, including LSIF-based indexers,
 see the [Sourcegraph documentation](https://docs.sourcegraph.com/code_navigation/references/indexers).