Fix linting issues (updatecli#2479)

* docs: add missing github username env variable

Signed-off-by: Olblak <me@olblak.com>

* fix: linting issues

---------

Signed-off-by: Olblak <me@olblak.com>

Author: olblak

content/en/blog/2025/11/release_v0.110.0.md

@@ -50,6 +50,7 @@ We added an SCM kind `githubsearch` that generates SCM configurations from a Git
 Example updatecli.yaml using `githubsearch`:
 
 .updatecli.yaml
+
 ```yaml
 name: Update all Golang versions
 scms:
@@ -87,7 +88,7 @@ targets:
       searchpattern: true
 ```
 
-You can try this pipeline running 
+You can try this pipeline running
 
 ```bash
 export UPDATECLI_GITHUB_TOKEN=<your GitHub access token>

content/en/docs/plugins/_githubAuth.adoc

@@ -43,6 +43,7 @@ When these variables are set, Updatecli will use GitHub App authentication for a
 Set the following environment variable to use a Personal Access Token:
 
 - `UPDATECLI_GITHUB_TOKEN`: Your GitHub Personal Access Token
+- `UPDATECLI_GITHUB_USERNAME`: Your GitHub username, if required by certain operations like scm operation.
 
 Example:
 
@@ -132,4 +133,4 @@ If no valid authentication is found, Updatecli will fail with an error.
 
 '''
 
-*Tip:* For best security and maintainability, prefer using a GitHub App or environment variables for authentication, and avoid hardcoding secrets in your manifests.
+*Tip:* For best security and maintainability, prefer using a GitHub App or environment variables for authentication, and avoid hardcoding secrets in your manifests.