chore: update Markdown files

CODE_OF_CONDUCT.md

@@ -55,7 +55,7 @@ further defined and clarified by project maintainers.
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at [email protected]. All
+reported by contacting the project team at <[email protected]>. All
 complaints will be reviewed and investigated and will result in a response that
 is deemed necessary and appropriate to the circumstances. The project team is
 obligated to maintain confidentiality with regard to the reporter of an incident.
@@ -68,9 +68,9 @@ members of the project's leadership.
 ## Attribution
 
 This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+available at <https://www.contributor-covenant.org/version/1/4/code-of-conduct.html>
 
-[homepage]: https://www.contributor-covenant.org
+[homepage]: <https://www.contributor-covenant.org>
 
 For answers to common questions about this code of conduct, see
-https://www.contributor-covenant.org/faq
+<https://www.contributor-covenant.org/faq>

CONTRIBUTING.md

@@ -6,5 +6,5 @@ Note we have a [code of conduct](https://github.com/Cecilapp/Cecil/blob/master/C
 
 ## Pull Request process
 
- 1. Ensure dependecies are updated. Run `composer update`
- 2. You may request the main reviewer to merge the Pull Request for you
+1. Ensure dependecies are updated. Run `composer update`
+2. You may request the main reviewer to merge the Pull Request for you

SECURITY.md

@@ -11,5 +11,5 @@
 
 You can report a vulnerability by using:
 
- 1. the dedicated form provided by GitHub: https://github.com/Cecilapp/Cecil/security/advisories/new
- 2. the following email address: [email protected]
+1. the dedicated form provided by GitHub: <https://github.com/Cecilapp/Cecil/security/advisories/new>
+2. the following email address: <[email protected]>