doc: fix codespell problem

fixed codespell problems found
in the CI run

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

docs/metrics.md

@@ -22,8 +22,8 @@ curl -X GET http://10.109.65.142:8080/metrics 2>/dev/null | grep csi
 csi_liveness 1
 ```
 
-Promethues can be deployed through the promethues operator described [here](https://coreos.com/operators/prometheus/docs/latest/user-guides/getting-started.html).
-The [service-monitor](../deploy/service-monitor.yaml) will tell promethues how
+Prometheus can be deployed through the prometheus operator described [here](https://coreos.com/operators/prometheus/docs/latest/user-guides/getting-started.html).
+The [service-monitor](../deploy/service-monitor.yaml) will tell prometheus how
 to pull metrics out of CSI.
 
 Each CSI pod has a service to expose the endpoint to prometheus. By default, rbd

examples/rbd/storageclass.yaml

@@ -125,7 +125,7 @@ parameters:
    #   "file": Enable file encryption on the mounted filesystem
    #   "block": Encrypt RBD block device
    # When unspecified assume type "block". "file" and "block" are
-   # mutally exclusive.
+   # mutually exclusive.
    # encryptionType: "block"
 
    # (optional) Use external key management system for encryption passphrases by

internal/health-checker/checker.go

@@ -37,7 +37,7 @@ type checker struct {
 	// timeout contains the delay (interval + timeout)
 	timeout time.Duration
 
-	// mutex protects against concurrent access to healty, err and
+	// mutex protects against concurrent access to healthy, err and
 	// lastUpdate
 	mutex *sync.RWMutex
 

internal/util/crushlocation_test.go

@@ -60,7 +60,7 @@ func Test_getCrushLocationMap(t *testing.T) {
 			want: map[string]string{"zone": "zone1"},
 		},
 		{
-			name: "multuple matching crushlocation and node labels",
+			name: "multiple matching crushlocation and node labels",
 			args: input{
 				crushLocationLabels: "topology.io/zone,topology.io/rack",
 				nodeLabels: map[string]string{