docs(install): address early v2 feedback on installation and project support

Author: heitorlessa

docs/core/tracer.md

@@ -21,11 +21,9 @@ Tracer is an opinionated thin wrapper for [AWS X-Ray Python SDK](https://github.
 
 ### Install
 
-!!! info "This is not necessary if you're installing Powertools via [Lambda Layer](../index.md#lambda-layer){target="_blank"}"
+!!! info "This is not necessary if you're installing Powertools via [Lambda Layer/SAR](../index.md#lambda-layer){target="_blank"}"
 
-Add `aws-lambda-powertools[tracer]` as a dependency in your preferred tool: _e.g._, _requirements.txt_, _pyproject.toml_.
-
-This will ensure you have the required dependencies before using Tracer.
+Add `aws-lambda-powertools[tracer]` as a dependency in your preferred tool: _e.g._, _requirements.txt_, _pyproject.toml_. This will ensure you have the required dependencies before using Tracer.
 
 ### Permissions