Fix typos.

osutil/user.go

@@ -33,12 +33,12 @@ import (
 var userLookup = user.Lookup
 
 func AddExtraSudoUser(name string, sshKeys []string, gecos string) error {
-	// we check the (user)name ourselfs, adduser is a bit too
+	// we check the (user)name ourselves, adduser is a bit too
 	// strict (i.e. no `.`) - this regexp is in sync with that SSO
 	// allows as valid usernames
 	validNames := regexp.MustCompile(`^[a-z0-9][-a-z0-9+.-_]*$`)
 	if !validNames.MatchString(name) {
-		return fmt.Errorf("cannot add user %q: name contains invalid charackters", name)
+		return fmt.Errorf("cannot add user %q: name contains invalid characters", name)
 	}
 
 	cmd := exec.Command("adduser",

osutil/user_test.go

@@ -61,5 +61,5 @@ func (s *createUserSuite) TestAddExtraSudoUser(c *check.C) {
 
 func (s *createUserSuite) TestAddExtraSudoUserInvalid(c *check.C) {
 	err := osutil.AddExtraSudoUser("k!", nil, "my gecos")
-	c.Assert(err, check.ErrorMatches, `cannot add user "k!": name contains invalid charackters`)
+	c.Assert(err, check.ErrorMatches, `cannot add user "k!": name contains invalid characters`)
 }