fix: define research and promotion contribution types (#428)

lib/parse-comment.js

@@ -35,6 +35,8 @@ const validContributionTypes = [
   "tutorial",
   "usertesting",
   "video",
+  "research",
+  "promotion",
 ];
 
 // Types that are valid multi words, that we need to re map back to their camelCase parts
@@ -91,6 +93,7 @@ const contributionTypeMappings = {
   translations: "translation",
   tutorials: "tutorial",
   videoes: "video",
+  advertisement: "promotion",
 };
 
 // Additional terms to match to types (plurals, aliases etc) that are multi word
@@ -108,6 +111,7 @@ const contributionTypeMultiWordMapping = {
   "user testing": "userTesting",
   "business development": "business",
   "project management": "projectManagement",
+  "social media": "promotion",
 };
 
 const Contributions = {};