Add quotes around variable values in .env.example.

setup/.env.example

@@ -6,8 +6,8 @@ declare -xr ENV_SOURCED="yes"
 WSL_USER=
 
 # set-timezone.sh
-TZ_AREA=Etc
-TZ_ZONE=UTC
+TZ_AREA="Etc"
+TZ_ZONE="UTC"
 
 # ssh keys
 # Set SSH_DEFAULT_SELECT to select a default option without prompting.
@@ -28,19 +28,19 @@ MYSQL_USER_NAME=
 MYSQL_USER_PASSWORD=
 
 # install-ngrok.sh
-NGROK_DIRECTORY=/opt/ngrok
-NGROK_DOWNLOAD_LINK=https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-amd64.zip
+NGROK_DIRECTORY="/opt/ngrok"
+NGROK_DOWNLOAD_LINK="https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-amd64.zip"
 
 # install-node.sh
 # NODE_VERSION is used by NVM, so this parameter is named differently.
-INSTALL_NODE_VERSION=v10.11.0
+INSTALL_NODE_VERSION="v10.11.0"
 
 # install-nvm.sh
 # Do not set NVM_DIR; use NVM_DIR_GLOBAL
 # If NODE_VERSION is set, NVM will automatically install it.
-NVM_DIR_GLOBAL=/opt/nvm
-NVM_VERSION=v0.35.1
-NVM_PROFILE=/etc/bash.bashrc
+NVM_DIR_GLOBAL="/opt/nvm"
+NVM_VERSION="v0.35.1"
+NVM_PROFILE="/etc/bash.bashrc"
 
 # install-phpenv.sh
 PHPENV_ROOT="/opt/phpenv"