fix: remove github topics cta (#20)

Author: st3v3nmw

content/guides/cli.md

@@ -150,8 +150,6 @@ Advances to the next stage after verifying the current stage passes. Updates `lc
 
 If the current stage hasn't been completed, `lc next` runs tests first and only advances if they pass.
 
-If you're on GitHub, consider adding `lc` and `lc-<language>` (e.g., `lc-go`, `lc-rust`) as topics to your repository to share your implementation.
-
 ## Commands Reference
 
 Run `lc --help` to see all available commands, or `lc <command> --help` for command-specific options.

content/how-it-works.md

@@ -50,6 +50,4 @@ Pass the current stage, then run `lc next` to unlock the next stage. Each stage
 
 By the end of the challenge, you'll have a deep understanding of how these systems actually work because you built one yourself.
 
-If you're on GitHub, consider adding `lc` and `lc-<language>` (e.g., `lc-go`, `lc-rust`) as topics to your repository to share your implementation.
-
 Good luck! 🚀