Fixed formatting and markdown linting errors.

.github/CONTRIBUTING.md

@@ -100,9 +100,11 @@ Before submitting a PR:
 
 - If you've updated translation strings, please check that you have used the same
   format as the other entries, for example:
+
   ```javascript
   'You can find the latest one here': 'Puoi trovare l\'ultima qui',
   ```
+
   - Both the "from" and "to" parts of each entry are surrounded by single-quotes
     (`'aa'`)
   - Any single-quotes within the "from" or "to" are escaped with a backslash

.github/ISSUE_TEMPLATE.md

@@ -24,7 +24,7 @@ What action or series of actions is the cause of the issue?
 
 ### Expected behavior
 
- What should happen?
+What should happen?
 
 ### Current behavior
 
@@ -34,9 +34,11 @@ What happens instead?
 
 - Version of the script: x.x.x - look for a line near the top of the code which
   reads:
+
   ```javascript
   version: 'w.x.y-z',
   ```
+
 - Any other details which might be related to the context;
 
 ### Extended description

docs/translation-guide.md

@@ -37,7 +37,9 @@ To add a new language:
     'You can find the latest one here': 'Puoi trovare l\'ultima qui',
   },
   ```
+
 - Paste it just below itself, like this:
+
   ```javascript
   'it': {
     'Age': 'Età',
@@ -50,6 +52,7 @@ To add a new language:
     'You can find the latest one here': 'Puoi trovare l\'ultima qui',
   },
   ```
+
 - Replace the language code of your translation with your language code and
   proceed to translate every item in the list, leaving the string on the left of
   the `:` unchanged and translating the one on the right, like this:
@@ -66,6 +69,7 @@ To add a new language:
     'You can find the latest one here': 'Die aktuelle Version findest du hier',
   },
   ```
+
 - These are some things you have to keep in mind to do this correctly:
   1. Remember to put a comma at the end of each line except after the open curly
      bracket.