fix(semantic-release): change github success comment

Fixes #19

.releaserc

@@ -13,8 +13,7 @@
   "success": [
     {
       "path": "@semantic-release/github",
-      "successComment":
-        ":tada: This issue has been resolved in version ${nextRelease.version} :tada:\n\nThe release is available on [GitHub release](<github_release_url>)"
+      "successComment": ":tada: This issue has been resolved in version ${nextRelease.version} :tada:\n\n${releases.filter(rel =>!!rel.name).length > 0 ? `\n\nThe release is available on${releases.filter(rel => !!rel.name).length === 1 ? ` ${releases.filter(rel => !!rel.name)[0].url ? `[${releases.filter(rel => !!rel.name)[0].name}](${releases.filter(rel => !!rel.name)[0].url})` : `${releases.filter(rel => !!rel.name)[0].name}`}` : `:\n${releases.filter(release => !!release.name).map(releaseInfo => `- ${releaseInfo.url ? `[${releaseInfo.name}](${releaseInfo.url})` : `${releaseInfo.name}`}`,).join('\n')}`}`: ''}"
     }
   ],
   "fail": ["@semantic-release/github"],