Update index.rst

added more details to the ROCmInfo description

[ROCm/rocminfo commit: 2d04e1f798]

projects/rocminfo/docs/index.rst

@@ -5,7 +5,7 @@
 ROCmInfo documentation
 *************************
 
-ROCmInfo is a ROCm application for reporting system information.
+ROCmInfo is a ROCm application for reporting system information. It is a tool shipped to enumerate GPU agents available on a working ROCm stack.
 
 
 For more details, see `GitHub. <https://github.com/ROCm/rocminfo>`_