Update Pipelines guide for existing repos (#2192)

Author: oredavids

docs/2.0/docs/pipelines/concepts/overview.md

@@ -7,7 +7,7 @@ Having worked with hundreds of organizations to help them improve DevOps, we've
 1. Teams want to control exactly how infrastructure change gets rolled out
 2. Deploying infrastructure changes can be scary!
 
-To address your need for _control_, we've designed Gruntwork Pipelines to use [configuration as code](../../../reference/pipelines/configurations-as-code.md), where you use HCL (a popular alternative to JSON and YAML) to set configuration values that apply to your entire git repo, to just one environment, or to a single deployable unit of infrastructure. For example, you can specify a unique AWS authentication strategy for each deployable unit of infrastructure, one per environment, or a single strategy for the entire git repo.
+To address your need for _control_, we've designed Gruntwork Pipelines to use [configuration as code](/2.0/reference/pipelines/configurations-as-code/api), where you use HCL (a popular alternative to JSON and YAML) to set configuration values that apply to your entire git repo, to just one environment, or to a single deployable unit of infrastructure. For example, you can specify a unique AWS authentication strategy for each deployable unit of infrastructure, one per environment, or a single strategy for the entire git repo.
 
 To address your need for _assurance_ that an infrastructure change is safe to apply, we include a thoughtfully formatted `terragrunt plan` user experience, and the ability to customize Gruntwork Pipelines to support arbitrary steps that your organization needs to establish confidence in a deployment. Building assurance also factors heavily into our roadmap.
 

docs/2.0/docs/pipelines/guides/terragrunt-env-vars.md

@@ -6,7 +6,7 @@ When Pipelines detects changes to IaC in your infrastructure repositories it wil
 
 You can inspect the specific command in different scenarios by viewing the logs for a Pipelines workflow run.
 
-In some cases you may find that you need to pass additional options to terragrunt to meet your specific needs. All cli options for Terragrunt also have a corresponding Environment Variable that if populated will change Terragunt behavior.
+In some cases you may find that you need to pass additional options to terragrunt to meet your specific needs. All cli options for Terragrunt also have a corresponding Environment Variable that if populated will change Terragrunt behavior.
 
 See the full list of available options <span class="external-link"><a href="https://terragrunt.gruntwork.io/docs/reference/cli-options/#cli-options">in the Terragrunt documentation</a></span>.