These changes are resolving PR comments

Signed-off-by: Lenka Bocincova <[email protected]>

index.md

@@ -38,7 +38,7 @@ Join #crio on [Kubernetes Slack](https://slack.k8s.io/)
 To install on the following operating systems, set the environment variable `$OS` as the appropriate field in the following table:
 
 | Operating system | $OS               |
-|------------------|-------------------|
+| ---------------- | ----------------- |
 | Centos 8         | `CentOS_8`        |
 | Centos 8 Stream  | `CentOS_8_Stream` |
 | Centos 7         | `CentOS_7`        |
@@ -58,7 +58,7 @@ yum install cri-o
 To install on the following operating systems, set the environment variable `$OS` as the appropriate field in the following table:
 
 | Operating system | $OS               |
-|------------------|-------------------|
+| ---------------- | ----------------- |
 | Debian Unstable  | `Debian_Unstable` |
 | Debian Testing   | `Debian_Testing`  |
 | Ubuntu 20.04     | `xUbuntu_20.04`   |
@@ -112,7 +112,7 @@ It is a lightweight alternative to using Docker, Moby or rkt as the runtime for
 * {:.contributor} IBM
 
 CRI-O is developed by maintainers and contributors from these companies and others.
-It is a community-driven, open source project. Feedback, users, and of course, contributors, are always welcome via the [cri-o/cri-o](https://github.com/cri-o/cri-o) GitHub project. If you would like to contribute for the first time, check the Contribute section below.
+It is a community-driven, open source project. Feedback, users, and of course, contributors, are always welcome via the [cri-o/cri-o](https://github.com/cri-o/cri-o) GitHub project. For more guidance on how to contribute, please see the Contribute section below.
 
 ## Architecture