Minor change in README.md

README.md

@@ -376,6 +376,6 @@ qrls JOB_ID
 Modify requirements from a job in the queue
 
 ```bash
-#When launched, gpu_slots=2, change it to 1
+#When launched, cpu_slots=2, change it to 1
 qalter -l 'cpu_slots=1,h_vmem=infinity,virtual_free=51200M' JOB_ID
 ```