Apply suggestions from code review

Author: stayseesong

src/connections/destinations/catalog/amplitude/index.md

@@ -9,7 +9,7 @@ platform for your web and mobile apps. By analyzing the actions your users
 perform, you can gain a better understanding to drive retention, engagement,
 and conversion.
 
-Segment's Amplitude destination code is open source and available on GitHub. You can view these repos:
+Segment's Amplitude destination code is open source and available on GitHub. You can view these repositories:
 - [Android](https://github.com/segment-integrations/analytics-android-integration-amplitude){:target="_blank"}
 - [iOS](https://github.com/segment-integrations/analytics-ios-integration-amplitude){:target="_blank"}
 - [JavaScript](https://github.com/segmentio/analytics.js-integrations/tree/master/integrations/amplitude){:target="_blank"}

src/connections/destinations/catalog/appsflyer/index.md

@@ -5,7 +5,7 @@ id: 54521fd525e721e32a72ee8f
 ---
 [AppsFlyer](https://www.appsflyer.com/) is the world's leading mobile attribution & marketing analytics platform, helping app marketers around the world make better decisions. Our AppsFlyer destination code is open-source. You can browse the code on GitHub for [iOS](https://github.com/AppsFlyerSDK/segment-appsflyer-ios) and [Android](https://github.com/AppsFlyerSDK/AppsFlyer-Segment-Integration).
 
-Segment's Appsflyer destination code is open source and available on GitHub. You can view these repos:
+Segment's Appsflyer destination code is open source and available on GitHub. You can view these repositories:
 - [Android](https://github.com/AppsFlyerSDK/appsflyer-segment-android-plugin){:target="_blank"}
 - [iOS](https://github.com/AppsFlyerSDK/segment-appsflyer-ios){:target="_blank"}
 - [Kotlin](https://github.com/segment-integrations/analytics-kotlin-appsflyer){:target="_blank"}

src/connections/destinations/catalog/firebase/index.md

@@ -8,7 +8,7 @@ Firebase is Google's platform for mobile apps. The Segment Firebase destination
 > info ""
 > As of October 2019, Firebase replaced the legacy version of Google Analytics Classic for mobile devices. (If you used Google Analytics for mobile, see the [migration guide](/docs/connections/destinations/catalog/google-analytics/migrating/).)
 
-Segment's Firebase destination code is open source and available on GitHub. You can view these repos:
+Segment's Firebase destination code is open source and available on GitHub. You can view these repositories:
 - [Android](https://github.com/segment-integrations/analytics-android-integration-firebase){:target="_blank"}
 - [iOS](https://github.com/segment-integrations/analytics-ios-integration-firebase){:target="_blank"}
 - [Kotlin](https://github.com/segment-integrations/analytics-kotlin-firebase){:target="_blank"}

src/connections/destinations/catalog/mixpanel/index.md

@@ -6,7 +6,7 @@ id: 54521fd925e721e32a72eed6
 ---
 [Mixpanel](https://mixpanel.com/?utm_source=segmentio&utm_medium=docs&utm_campaign=partners) is an event tracking and segmentation platform for your web and mobile apps. By analyzing the actions your users perform, you can gain a better understanding to drive retention, engagement, and conversion. The client-side Mixpanel Destination code is open-source.
 
-Segment's Mixpanel destination code is open source and available on GitHub. You can view these repos:
+Segment's Mixpanel destination code is open source and available on GitHub. You can view these repositories:
 - [Analytics.js in Device-mode](https://github.com/segmentio/analytics.js-integrations/tree/master/integrations/mixpanel){:target="_blank"}
 - [Android](https://github.com/segment-integrations/analytics-android-integration-mixpanel){:target="_blank"}
 - [iOS](https://github.com/segment-integrations/analytics-ios-integration-mixpanel){:target="_blank"}