Fix codeowner syntax for docs (#584)

Author: samjwu

.github/CODEOWNERS

@@ -2,9 +2,9 @@
 * @stanleytsang-amd @umfranzw @RobsonRLemos @lawruble13
 
 # Documentation files
-docs/* @ROCm/rocm-documentation
+docs/ @ROCm/rocm-documentation
 *.md @ROCm/rocm-documentation
 *.rst @ROCm/rocm-documentation
 
 # Header directory
-library/include/* @ROCm/rocm-documentation @stanleytsang-amd @umfranzw @RobsonRLemos @lawruble13
+library/include/ @ROCm/rocm-documentation @stanleytsang-amd @umfranzw @RobsonRLemos @lawruble13