Fix a typo

lab_1/README.md

@@ -83,7 +83,7 @@ Hello from the GPU! My threadId is 31
 
 **Questions**
 
-- Why should ``srun`` be called with the argument ``-n 1`` and note ``-n 24`` like in the MPI lab?
+- Why should ``srun`` be called with the argument ``-n 1`` and not ``-n 24`` like in the MPI lab?
 - Were you able to see the suggested output? If not, can you guess why only the CPU code generated the output?
 
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