README: lsp server might be in exec-path instead of PATH (#24)

Author: zeorin

README.md

@@ -94,6 +94,9 @@ Then, put the `emacs-lsp-booster` binary in your $PATH (e.g. `~/.local/bin`).
              (not (functionp 'json-rpc-connection))  ;; native json-rpc
              (executable-find "emacs-lsp-booster"))
         (progn
+          (let ((command-from-exec-path (executable-find (car orig-result))))
+            (when command-from-exec-path
+                  (setcar orig-result command-from-exec-path)))
           (message "Using emacs-lsp-booster for %s!" orig-result)
           (cons "emacs-lsp-booster" orig-result))
       orig-result)))