docs: remove outdated mention of null-ls

docs/manual/configuring/languages.md

@@ -1,10 +1,10 @@
 # Language Support {#ch-languages}
 
 Language specific support means there is a combination of language specific
-plugins, `treesitter` support, `nvim-lspconfig` language servers, and `null-ls`
-integration. This gets you capabilities ranging from autocompletion to
-formatting to diagnostics. The following languages have sections under the
-`vim.languages` attribute.
+plugins, `treesitter` support, `nvim-lspconfig` language servers, `conform-nvim`
+formatters, and `nvim-lint` linter integration. This gets you capabilities
+ranging from autocompletion to formatting to diagnostics. The following
+languages have sections under the `vim.languages` attribute.
 
 - Rust: [vim.languages.rust.enable](#opt-vim.languages.rust.enable)
 - Nix: [vim.languages.nix.enable](#opt-vim.languages.nix.enable)

docs/release-notes/rl-0.8.md

@@ -515,10 +515,12 @@
 
 [Morsicus](https://github.com/Morsicus):
 
-- Add [EEx Treesitter Grammar](https://github.com/connorlay/tree-sitter-eex) for Elixir
-- Add [HEEx Treesitter Grammar](https://github.com/phoenixframework/tree-sitter-heex) for Elixir
+- Add [EEx Treesitter Grammar](https://github.com/connorlay/tree-sitter-eex) for
+  Elixir
+- Add
+  [HEEx Treesitter Grammar](https://github.com/phoenixframework/tree-sitter-heex)
+  for Elixir
 
 [diced](https://github.com/diced):
 
 - Fixed `typescript` treesitter grammar not being included by default.
-