Apply suggestions from code review

Author: stayseesong

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

@@ -5,7 +5,7 @@ id: 5ece242d61055a0b1bb2e103
 ---
 [PostHog](https://posthog.com/?utm_source=segmentio&utm_medium=docs&utm_campaign=partners) is self-hosted, open-source analytics product. Get the same powerful features as other product analytics software but keep full control over your data.
 
-This destination is maintained by PostHog. For any issues with the destination, checkout the [PostHog users slack](https://posthog.com/slack) or [contact the PostHog Support team](mailto:[email protected]).
+This destination is maintained by PostHog. For any issues with the destination, check out the [PostHog users slack](https://posthog.com/slack) or [contact the PostHog Support team](mailto:[email protected]).
 
 ## Getting Started
 
@@ -17,9 +17,9 @@ This destination is maintained by PostHog. For any issues with the destination,
 4. Go to your [PostHog set up page](https://app.posthog.com/setup), and find and copy the **API key**.
 5. Enter the PostHog API Key that you copied in the PostHog destination settings in Segment.
 6. Enter your PostHog instance URL, as the address to your instance **without any trailing slash**, for example:
-  - `https://app.posthog.com` if you are using PostHog Cloud US
-  - `https://eu.posthog.com` if you are using PostHog Cloud EU
-  - `https://posthog-example.herokuapp.com` if you are self-hosting on Heruku
+  - `https://app.posthog.com` if you use PostHog Cloud US
+  - `https://eu.posthog.com` if you use PostHog Cloud EU
+  - `https://posthog-example.herokuapp.com` if you self-host on Heroku
 
 ## Page