Merge #6403

6403: docs: Update Neovim nvim-lspconfig repository link r=lnicola a=rockerBOO

`nvim-lsp` updated their repository to `nvim-lspconfig` to lessen confusion about what it does. 

Co-authored-by: Dave Lage <[email protected]>

Author: bors[bot]

docs/user/manual.adoc

@@ -239,8 +239,8 @@ let g:ale_linters = {'rust': ['analyzer']}
 ==== nvim-lsp
 
 NeoVim 0.5 (not yet released) has built-in language server support.
-For a quick start configuration of rust-analyzer, use https://github.com/neovim/nvim-lsp#rust_analyzer[neovim/nvim-lsp].
-Once `neovim/nvim-lsp` is installed, use `+lua require'nvim_lsp'.rust_analyzer.setup({})+` in your `init.vim`.
+For a quick start configuration of rust-analyzer, use https://github.com/neovim/nvim-lspconfig#rust_analyzer[neovim/nvim-lspconfig].
+Once `neovim/nvim-lspconfig` is installed, use `+lua require'nvim_lsp'.rust_analyzer.setup({})+` in your `init.vim`.
 
 === Sublime Text 3