Fix a few spellings.

pkg/proxy/iptables/proxier.go

@@ -620,7 +620,7 @@ func (proxier *Proxier) deleteServiceConnections(svcIPs []string) {
 	}
 }
 
-//execConntrackTool executes conntrack tool using given paramters
+//execConntrackTool executes conntrack tool using given parameters
 func (proxier *Proxier) execConntrackTool(parameters ...string) error {
 	conntrackPath, err := proxier.exec.LookPath("conntrack")
 	if err != nil {

pkg/runtime/serializer/protobuf/protobuf.go

@@ -31,7 +31,7 @@ import (
 
 var (
 	// protoEncodingPrefix serves as a magic number for an encoded protobuf message on this serializer. All
-	// proto messages serialized by this schema will be preceeded by the bytes 0x6b 0x38 0x73, with the fourth
+	// proto messages serialized by this schema will be precedeed by the bytes 0x6b 0x38 0x73, with the fourth
 	// byte being reserved for the encoding style. The only encoding style defined is 0x00, which means that
 	// the rest of the byte stream is a message of type k8s.io.kubernetes.pkg.runtime.Unknown (proto2).
 	//

test/e2e/framework/perf_util.go

@@ -22,7 +22,7 @@ import (
 	"k8s.io/kubernetes/test/e2e/perftype"
 )
 
-// TODO(random-liu): Change the tests to actually use PerfData from the begining instead of
+// TODO(random-liu): Change the tests to actually use PerfData from the beginning instead of
 // translating one to the other here.
 
 // ApiCallToPerfData transforms APIResponsiveness to PerfData.