Minor modification in kubectl-cheatsheet.md applied

Author: nitishfy

content/en/docs/reference/kubectl/cheatsheet.md

@@ -389,8 +389,8 @@ kubectl cluster-info                                                  # Display
 kubectl cluster-info dump                                             # Dump current cluster state to stdout
 kubectl cluster-info dump --output-directory=/path/to/cluster-state   # Dump current cluster state to /path/to/cluster-state
 
-# "View existing taints on which exist on current nodes."
-kubectl get nodes -o=custom-columns=NodeName:.metadata.name,TaintKey:.spec.taints[*].key,TaintValue:.spec.taints[*].value,TaintEffect:.spec.taints[*].effect
+# View existing taints on which exist on current nodes.
+kubectl get nodes -o='custom-columns=NodeName:.metadata.name,TaintKey:.spec.taints[*].key,TaintValue:.spec.taints[*].value,TaintEffect:.spec.taints[*].effect'
 
 # If a taint with that key and effect already exists, its value is replaced as specified.
 kubectl taint nodes foo dedicated=special-user:NoSchedule