Fix a couple badge examples

lib/all-badge-examples.js

@@ -138,7 +138,7 @@ const allBadgeExamples = [
       },
       {
         title: 'TeamCity CodeBetter Coverage',
-        previewUri: '/teamcity/coverage/bt1242.svg'
+        previewUri: '/teamcity/coverage/bt428.svg'
       },
       {
         title: 'Scrutinizer',
@@ -1294,11 +1294,10 @@ const allBadgeExamples = [
           'detail'
         ],
         documentation: 'githubDoc',
-        exampleUri: '/github/issues/detail/badges/shields/979.svg'
       },
       {
         title: 'GitHub issue title',
-        previewUri: '/github/issues/detail/s/badges/shields/979.svg',
+        previewUri: '/github/issues/detail/title/badges/shields/979.svg',
         keywords: [
           'GitHub',
           'issue',
@@ -1761,7 +1760,7 @@ const allBadgeExamples = [
       },
       {
         title: 'Swagger Validator',
-        previewUri: '/swagger/valid/2.0/https/bitbucket.org/api/swagger.json.svg'
+        previewUri: '/swagger/valid/2.0/https/raw.githubusercontent.com/OAI/OpenAPI-Specification/master/examples/v2.0/json/petstore-expanded.json.svg'
       },
       {
         title: 'Uptime Robot status',