triton/tut/gpu: Minor updates based on yesterday's discussion

Author: rkdarst

triton/tut/gpu.rst

@@ -96,8 +96,8 @@ may be able to test much faster here.
 
 
 
-Available machine learning frameworks
--------------------------------------
+Commonly used codes that use GPUs
+---------------------------------
 
 We support many common machine learning frameworks out of the box:
 
@@ -167,6 +167,12 @@ Monitoring efficient use of GPUs
 
 .. include:: ../examples/monitoring/gpu.rst
 
+Common problems with GPUs
+-------------------------
+
+CUDA libraries not found
+~~~~~~~~~~~~~~~~~~~~~~~~
+
 Input/output
 ~~~~~~~~~~~~