Normalize the error messages

Signed-off-by: Chris Cummer <chriscummer@me.com>

Author: senorprogrammer

til.go

@@ -45,7 +45,7 @@ targetDirectory: "~/Documents/til"
 	errConfigFileAssert   = "could not assert the configuration file exists"
 	errConfigFileCreate   = "could not create the configuration file"
 	errConfigFileWrite    = "could not write the configuration file"
-	errConfigPathEmpty    = "the config path cannot be empty"
+	errConfigPathEmpty    = "config path cannot be empty"
 	errConfigValueRead    = "could not read a required configuration value"
 	errNoTitle            = "title must not be blank"
 	errTargetDirCreate    = "could not create the target directories"