fix config home dir help text (#907)

## Type of change

- [x] 🐛 Bugfix

## Issue(s)

* #718

## Test Plan

- [x] 💪 Manual

src/cli/config/config.go

@@ -30,9 +30,11 @@ const (
 )
 
 var (
-	configFilePath string
-	configDir      string
-	defaultDir     string
+	configFilePath     string
+	configFilePathFlag string
+	configDir          string
+	defaultDir         string
+	displayDefaultFP   = filepath.Join("$HOME", ".corso.toml")
 )
 
 // Attempts to set the default dir and config file path.
@@ -64,13 +66,11 @@ func init() {
 // adds the persistent flag --config-file to the provided command.
 func AddConfigFlags(cmd *cobra.Command) {
 	fs := cmd.PersistentFlags()
-
-	def := configFilePath
-	if len(def) == 0 {
-		filepath.Join(defaultDir, ".corso.toml")
-	}
-
-	fs.StringVar(&configFilePath, "config-file", def, "config file location (default is "+defaultDir+".corso.toml)")
+	fs.StringVar(
+		&configFilePathFlag,
+		"config-file",
+		displayDefaultFP,
+		"config file location (default is $HOME/.corso.toml)")
 }
 
 // ---------------------------------------------------------------------------------------------------------
@@ -81,7 +81,12 @@ func AddConfigFlags(cmd *cobra.Command) {
 // verifies that the configuration was able to read a file.
 func InitFunc() func(*cobra.Command, []string) error {
 	return func(cmd *cobra.Command, args []string) error {
-		err := initWithViper(GetViper(cmd.Context()), configFilePath)
+		fp := configFilePathFlag
+		if len(fp) == 0 || fp == displayDefaultFP {
+			fp = configFilePath
+		}
+
+		err := initWithViper(GetViper(cmd.Context()), fp)
 		if err != nil {
 			return err
 		}
@@ -94,7 +99,7 @@ func InitFunc() func(*cobra.Command, []string) error {
 // struct for testing.
 func initWithViper(vpr *viper.Viper, configFP string) error {
 	// Configure default config file location
-	if configFP == "" {
+	if configFP == "" || configFP == displayDefaultFP {
 		// Find home directory.
 		_, err := os.Stat(configDir)
 		if err != nil {

src/cmd/mdgen/mdgen.go

@@ -170,8 +170,8 @@ func printFlags(buf *bytes.Buffer, flags *pflag.FlagSet) {
 		return
 	}
 
-	buf.WriteString("|Flag|Short|Default|Help\n")
-	buf.WriteString("|:----|:-----|:-------|:----\n")
+	buf.WriteString("|Flag|Short|Default|Help|\n")
+	buf.WriteString("|:----|:-----|:-------|:----|\n")
 
 	flags.VisitAll(func(flag *pflag.Flag) {
 		if flag.Hidden {
@@ -194,6 +194,6 @@ func printFlags(buf *bytes.Buffer, flags *pflag.FlagSet) {
 
 		buf.WriteString("|")
 		buf.WriteString(flag.Usage)
-		buf.WriteString("\n")
+		buf.WriteString("|\n")
 	})
 }