docs(#2934): script tidying

Author: alex-courtis

CONTRIBUTING.md

@@ -104,7 +104,6 @@ Suppressions are permitted only in the following cases:
 - Backwards compatibility shims
 - neovim API metadata incorrect, awaiting upstream fix
 - classic class framework
-- `gen_vimdoc_config.lua` help generator as it requires neovim source
 
 # Backwards Compatibility
 

scripts/gen_vimdoc.sh

@@ -19,7 +19,7 @@ DIR_WORK="/tmp/nvim-tree-gen_vimdoc"
 DIR_NVIM_SRC_DEF="/tmp/src/neovim-stable"
 
 if [ ! -f "${DIR_NVT}/scripts/gen_vimdoc.sh" ]; then
-	echo "Must be run from nvim-tree root"
+	echo "Must be run from nvim-tree root" 1>&2
 	exit 1
 fi
 

scripts/lintdoc.sh

@@ -22,7 +22,7 @@ DIR_NVT="${PWD}"
 DIR_NVIM_SRC_DEF="/tmp/src/neovim-stable"
 
 if [ ! -f "${DIR_NVT}/scripts/lintdoc.sh" ]; then
-	echo "Must be run from nvim-tree root"
+	echo "Must be run from nvim-tree root" 1>&2
 	exit 1
 fi
 
@@ -38,6 +38,8 @@ if [ ! -d "${DIR_NVIM_SRC}" ]; then
 
 Nvim source is required to run ${0}
 
+The "make lintdoc" target will be executed, which needs to compile Nvim first.
+
 Please:
   mkdir -p ${DIR_NVIM_SRC_DEF}
   curl -L 'https://github.com/neovim/neovim/archive/refs/tags/stable.tar.gz' | tar zx --directory $(dirname "${DIR_NVIM_SRC_DEF}")