docs: fixing typos (#156)

diff --git a/README.md b/README.md
index 3e9a618..a63ef61 100644
--- a/README.md
+++ b/README.md
@@ -18,4 +18,4 @@
 
 Full `go doc` style documentation for the package can be viewed online without
 installing this package by using the GoDoc site here: 
-http://pkg.go.dev/github.com/google/uuid
+https://pkg.go.dev/github.com/google/uuid
diff --git a/null_test.go b/null_test.go
index c6e5e69..fe0fe8d 100644
--- a/null_test.go
+++ b/null_test.go
@@ -205,10 +205,10 @@
 	var nu NullUUID
 	err := json.Unmarshal(jsonNull, &nu)
 	if err != nil || nu.Valid {
-		t.Errorf("expected nil when unmarshaling null, got %s", err)
+		t.Errorf("expected nil when unmarshalling null, got %s", err)
 	}
 	err = json.Unmarshal(jsonUUID, &nu)
 	if err != nil || !nu.Valid {
-		t.Errorf("expected nil when unmarshaling null, got %s", err)
+		t.Errorf("expected nil when unmarshalling null, got %s", err)
 	}
 }
diff --git a/version7.go b/version7.go
index 3167b64..0f5d994 100644
--- a/version7.go
+++ b/version7.go
@@ -83,7 +83,7 @@
 const nanoPerMilli = 1000000
 
 // getV7Time returns the time in milliseconds and nanoseconds / 256.
-// The returned (milli << 12 + seq) is guarenteed to be greater than
+// The returned (milli << 12 + seq) is guaranteed to be greater than
 // (milli << 12 + seq) returned by any previous call to getV7Time.
 func getV7Time() (milli, seq int64) {
 	timeMu.Lock()