Update documentation

Author: alexle0nte

rust-code-analysis-book/src/developers/update-grammars.md

@@ -35,6 +35,8 @@ Commit your changes and create a new pull request
 
 ## Internal grammars
 
+Update the version of `tree-sitter-cli` in the `package.json` file of the internal grammar and then install the updated version.
+
 Update dependency `version` field in `Cargo.toml` and `enums/Cargo.toml`. Below an example for the `tree-sitter-ccomment` grammar
 
 ```toml

rust-code-analysis-book/src/languages.md

@@ -3,13 +3,14 @@
 This is the list of programming languages parsed by
 **rust-code-analysis**.
 
+- [x] C
 - [x] C++
+- [x] Mozcpp
+- [x] Ccomment
+- [x] Preproc
 - [x] Java
 - [x] JavaScript
-- [x] The JavaScript used in Firefox internal
-- [ ] Kotlin
+- [x] Mozjs
 - [x] Python
 - [x] Rust
 - [x] Typescript
-
-A check indicates which languages have metrics implemented.