Update repositories.txt

[pnhung177]

No description provided.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/pokerobo/Pokerobo_RCB:

Linting library in Pokerobo_RCB
INFO: No header file found matching library name (Pokerobo_RCB.h). Best practices are for primary header filename to    
      match library name.                                                                                               
      See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format            
      (Rule LS008)                                                                                                      
WARNING: library.properties name Pokerobo RCB contains spaces. Although supported, best practices is to not use spaces.
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format        
         (Rule LP015)                                                                                                  
WARNING: No readme found. Please document your library.                                                                                
         See:                                                                                                                          
         https://docs.github.com/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-readmes
         (Rule LD001)                                                                                                                  

Linter results for project: 0 ERRORS, 2 WARNINGS

-------------------

Linting sketch in Pokerobo_RCB/examples/Demo-Joystick-Handler

Linter results for project: no errors or warnings

-------------------

Linting sketch in Pokerobo_RCB/examples/Remote-Control-Player

Linter results for project: no errors or warnings

-------------------

Linting sketch in Pokerobo_RCB/examples/Remote-Control-Tester

Linter results for project: no errors or warnings

-------------------

Linter results for projects: 0 ERRORS, 2 WARNINGS

[github-actions]

Your submission has now been accepted! Thanks for your contribution to the Arduino Library Manager index.

The library(s) will be available for installation via Library Manager within a day's time.

You can check the logs from the Library Manager indexer for your library(s) here:
http://downloads.arduino.cc/libraries/logs/github.com/pokerobo/Pokerobo_RCB/