fix(webapp): add enviroment variable

[JAMares]

Add enviroment variable

What does this PR do?

• Resolve Update delegate verification link #351

Steps to test

1. Run Project
2. Enter to delegate or try login, must see this:
   

CheckList

• Follow proper Markdown format
• The content is adequate
• The content is available in both english and spanish
• I Ran a spell check

[gitguardian]

⚠️ GitGuardian has uncovered 2 secrets following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secrets in your pull request

GitGuardian id	Secret	Commit	Filename
4577043	Generic High Entropy Secret	4d3d15a	.env.example	View secret
4577043	Generic High Entropy Secret	a1c776f	.env.example	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secrets safely. Learn here the best practices.
3. Revoke and rotate these secrets.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

---

<sup>🦉 GitGuardian detects secrets in your source code to help developers and security teams secure the modern development process. You are seeing this because you or someone else with access to this repository has authorized GitGuardian to scan your pull request.

Our GitHub checks need improvements? Share your feedbacks!</sup>

[xavier506]

LGTM