Use link instead of writing description directly (#3997)

Author: ROCKTAKEY

docs/manual-language-docs/lsp-latex.md

@@ -1,36 +1,5 @@
 ---
 root_file: docs/manual-language-docs/lsp-latex.md
 ---
-## Available functions
-### `lsp-latex-build`
-Build .tex files with texlab.
-It use latexmk by default, so add .latexmkrc if you want to customize
-latex commands or options. You can change build command and option to other
-such as `make`, by changing `lsp-latex-build-executable` and
-`lsp-latex-build-args`.
-
-This command builds asynchronously by default, while it build synchronously
-with prefix argument(C-u).
-
-### `lsp-latex-forward-search`
-Move to current position on pdf viewer.
-To use, you should set `lsp-latex-forward-search-executable` and
-`lsp-latex-forward-search-args` according to your pdf viewer.
-See also [document of texlab](https://texlab.netlify.app/docs/installation/previewing).
-
-## Note
-In this package, you can use even texlab v0.4.2 or older, written with Java,
-though it is not recommended. If you want to use them, you can write like:
-
-``` emacs-lisp
-;; Path to Java executable. If it is added to environmental PATH,
-;; you don't have to write this.
-(setq lsp-latex-java-executable "/path/to/java")
-
-;; "texlab.jar" must be located at a directory contained in `exec-path'
-;; "texlab" must be located at a directory contained in `exec-path'.
-(setq lsp-latex-texlab-jar-file 'search-from-exec-path)
-;; If you want to put "texlab.jar" somewhere else,
-;; you can specify the path to "texlab.jar" as follows:
-;; (setq lsp-latex-texlab-jar-file "/path/to/texlab.jar")
-```
+# lsp-latex.el: texlab LSP-client
+See [lsp-latex.el homepage](https://github.com/ROCKTAKEY/lsp-latex).