docs: reformat signature to two-line markdown standard

Author: yss-ef

README.md

@@ -101,6 +101,5 @@ Upon termination (Ctrl+C), `devctl` gracefully stops all processes and performs
 
 This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
 
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-*Authored by Youssef Fellah.*
-*Personal Project.*
+Authored by Youssef Fellah.  
+Personal Project.

samples/README.md

@@ -16,6 +16,5 @@ This directory contains examples of projects generated using `devctl`. These sam
 ## How to use
 These folders are for demonstration purposes. To generate your own projects, use the `devctl init` command as described in the main [README](../README.md).
 
----
-*Authored by Youssef Fellah.*
-*Personal Project.*
+Authored by Youssef Fellah.  
+Personal Project.

samples/sample-front/README.md

@@ -58,6 +58,5 @@ Angular CLI does not come with an end-to-end testing framework by default. You c
 
 For more information on using the Angular CLI, including detailed command references, visit the [Angular CLI Overview and Command Reference](https://angular.dev/tools/cli) page.
 
----
-*Authored by Youssef Fellah.*
-*Personal Project.*
+Authored by Youssef Fellah.  
+Personal Project.