fix(docs): fix broken link in prompt security (#978)

Signed-off-by: Lior Drihem <142671096+lior-ps@users.noreply.github.com>

Author: lior-ps

docs/user-guides/guardrails-library.md

@@ -825,7 +825,7 @@ rails:
       - protect response
 ```
 
-For more details, check out the [Prompt Security Integration](./community/prompt_security.md) page.
+For more details, check out the [Prompt Security Integration](./community/prompt-security.md) page.
 
 ## Other