docs(iac): refactor getting started and auth (#8779)

docs/tutorials/iac/getting-started-iac.md

@@ -1,10 +1,10 @@
 # Getting Started with the IaC Provider
 
-Prowler's Infrastructure as Code (IaC) provider enables you to scan local or remote infrastructure code for security and compliance issues using [Trivy](https://trivy.dev/). This provider supports a wide range of IaC frameworks, allowing you to assess your code before deployment.
+Prowler's Infrastructure as Code (IaC) provider enables scanning of local or remote infrastructure code for security and compliance issues using [Trivy](https://trivy.dev/). This provider supports a wide range of IaC frameworks, allowing assessment of code before deployment.
 
 ## Supported Scanners
 
-The IaC provider leverages Trivy to support multiple scanners, including:
+The IaC provider leverages [Trivy](https://trivy.dev/latest/docs/scanner/vulnerability/) to support multiple scanners, including:
 
 - Vulnerability
 - Misconfiguration
@@ -13,31 +13,34 @@ The IaC provider leverages Trivy to support multiple scanners, including:
 
 ## How It Works
 
-- The IaC provider scans your local directory (or a specified path) for supported IaC files, or scan a remote repository.
+- The IaC provider scans local directories (or specified paths) for supported IaC files, or scans remote repositories.
 - No cloud credentials or authentication are required for local scans.
 - For remote repository scans, authentication can be provided via [git URL](https://git-scm.com/docs/git-clone#_git_urls), CLI flags or environment variables.
+  - Check the [IaC Authentication](./authentication.md) page for more details.
 - Mutelist logic is handled by Trivy, not Prowler.
 - Results are output in the same formats as other Prowler providers (CSV, JSON, HTML, etc.).
 
-## Usage
+## Prowler CLI
 
-To run Prowler with the IaC provider, use the `iac` argument. You can specify the directory or repository to scan, frameworks to include, and paths to exclude.
+### Usage
 
-### Scan a Local Directory (default)
+Use the `iac` argument to run Prowler with the IaC provider. Specify the directory or repository to scan, frameworks to include, and paths to exclude.
+
+#### Scan a Local Directory (default)
 
 ```sh
 prowler iac --scan-path ./my-iac-directory
 ```
 
-### Scan a Remote GitHub Repository
+#### Scan a Remote GitHub Repository
 
 ```sh
 prowler iac --scan-repository-url https://github.com/user/repo.git
 ```
 
-#### Authentication for Remote Private Repositories
+##### Authentication for Remote Private Repositories
 
-You can provide authentication for private repositories using one of the following methods:
+Authentication for private repositories can be provided using one of the following methods:
 
 - **GitHub Username and Personal Access Token (PAT):**
   ```sh
@@ -52,12 +55,12 @@ You can provide authentication for private repositories using one of the followi
 - If not provided via CLI, the following environment variables will be used (in order of precedence):
     - `GITHUB_OAUTH_APP_TOKEN`
     - `GITHUB_USERNAME` and `GITHUB_PERSONAL_ACCESS_TOKEN`
-- If neither CLI flags nor environment variables are set, the scan will attempt to clone without authentication or using the provided in the  [git URL](https://git-scm.com/docs/git-clone#_git_urls).
+- If neither CLI flags nor environment variables are set, the scan will attempt to clone without authentication or using the credentials provided in the [git URL](https://git-scm.com/docs/git-clone#_git_urls).
 
-#### Mutually Exclusive Flags
+##### Mutually Exclusive Flags
 - `--scan-path` and `--scan-repository-url` are mutually exclusive. Only one can be specified at a time.
 
-### Specify Scanners
+#### Specify Scanners
 
 Scan only vulnerability and misconfiguration scanners:
 
@@ -65,24 +68,16 @@ Scan only vulnerability and misconfiguration scanners:
 prowler iac --scan-path ./my-iac-directory --scanners vuln misconfig
 ```
 
-### Exclude Paths
+#### Exclude Paths
 
 ```sh
 prowler iac --scan-path ./my-iac-directory --exclude-path ./my-iac-directory/test,./my-iac-directory/examples
 ```
 
-## Output
+### Output
 
-You can use the standard Prowler output options, for example:
+Use the standard Prowler output options, for example:
 
 ```sh
 prowler iac --scan-path ./iac --output-formats csv json html
 ```
-
-## Notes
-
-- The IaC provider does not require cloud authentication for local scans.
-- For remote repository scans, authentication is optional but required for private repos.
-- CLI flags override environment variables for authentication.
-- It is ideal for CI/CD pipelines and local development environments.
-- For more details on supported scanners, see the [Trivy documentation](https://trivy.dev/latest/docs/scanner/vulnerability/).