Update repositories.txt

[DIYables]

No description provided.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/DIYables/DIYables-LED-Matrix:

Linting library in DIYables-LED-Matrix
WARNING: library.properties name value DIYables_LED_Matrix is longer than the recommended length of 16 characters.
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format   
         (Rule LP010)                                                                                             

Linter results for project: 0 ERRORS, 1 WARNINGS

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

Linting sketch in DIYables-LED-Matrix/examples/LED_Matrix

Linter results for project: no errors or warnings

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

Linter results for projects: 0 ERRORS, 1 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/DIYables/DIYables-LED-Matrix/

[DIYables]

Hello, it has been two days, but the library have not appeared on the Library Manager yet. Did I do something wrong ?

Thank you

[per1234]

Hi @DIYables. It is in my Library Manager:

Please check again.