Add thin space to hangman strings

- Hangman games now use a thin space character (U+2009) for a small distinguishing space between the lines.
- Updated ESLint config to ignore the warning that this creates.

.eslintrc.json

@@ -26,6 +26,7 @@
             "always"
         ],
         "no-console": "off",
+        "no-irregular-whitespace": "off",
         "block-scoped-var": [
             "warn"
         ]

triviabot.js

@@ -881,7 +881,10 @@ Trivia.doGame = async function(id, channel, author, scheduled, category, typeInp
         obscuredAnswer = `${obscuredAnswer}${char}`;
       }
       else {
-        obscuredAnswer = `${obscuredAnswer}\\_`;
+        // A thin space character (U+2009) is used so the underscores have
+        // a small distinguishing space between them.
+        // ESLint really doesn't like this, but it works great!
+        obscuredAnswer = `${obscuredAnswer}\\_ `;
       }
     }