Fix typos found by codespell (#247)

README.md

@@ -18,7 +18,7 @@ After a fair bit of work, I've just released v1.0 of this library which is essen
 Some notable features:
 - [x] Parse multi-frame DICOM imagery (both encapsulated and native pixel data)
 - [x] Channel-based streaming of `Frame`s to a client _as they are parsed_ out of the dicom
-- [x] Cleaner Go Element and Dataset representations (in the absense of Go generics)
+- [x] Cleaner Go Element and Dataset representations (in the absence of Go generics)
 - [x] Better support for icon image sets in addition to primary image sets
 - [x] Write and encode Datasets back to DICOM files
 - [x] Enhanced testing and benchmarking support
@@ -80,7 +80,7 @@ That represents the __v0__ history of the repository.
 
 ### v1
 
-For __v1__ I rewrote and redesigned the core library essentially from scratch, and added several new features and bug fixes that only live in __v1__. The architecture and APIs are completely different, as is some of the underlying parser logic (to be more efficient and correct). Most of the core rewrite work happend at the [`s/1.0-rewrite`](https://github.com/suyashkumar/dicom/tree/s/1.0-rewrite) branch. 
+For __v1__ I rewrote and redesigned the core library essentially from scratch, and added several new features and bug fixes that only live in __v1__. The architecture and APIs are completely different, as is some of the underlying parser logic (to be more efficient and correct). Most of the core rewrite work happened at the [`s/1.0-rewrite`](https://github.com/suyashkumar/dicom/tree/s/1.0-rewrite) branch. 
 
 
 ## Acknowledgements

pkg/dcmtime/common.go

@@ -47,7 +47,7 @@ type durationInfo struct {
 }
 
 // extractDurationInfo extracts a piece of DA, TM, or DT info from a parsed regex,
-// handling all validation checks, emtpy values, etc.
+// handling all validation checks, empty values, etc.
 func extractDurationInfo(subMatches []string, index int, isFractal bool) (durationInfo, error) {
 	info := durationInfo{}
 

pkg/dcmtime/date_test.go

@@ -209,8 +209,8 @@ func TestDate_SaneDefaults(t *testing.T) {
 	}
 
 	dcmVal := newValue.DCM()
-	expexted := "20210316"
-	if dcmVal != expexted {
-		t.Errorf("DCM(): expected '%v', but got '%v'", expexted, dcmVal)
+	expected := "20210316"
+	if dcmVal != expected {
+		t.Errorf("DCM(): expected '%v', but got '%v'", expected, dcmVal)
 	}
 }

pkg/dcmtime/datetime_test.go

@@ -732,8 +732,8 @@ func TestDatetime_SaneDefaults(t *testing.T) {
 	}
 
 	dcmVal := newValue.DCM()
-	expexted := "20210316134532.123456+0001"
-	if dcmVal != expexted {
-		t.Errorf("DCM(): expected '%v', but got '%v'", expexted, dcmVal)
+	expected := "20210316134532.123456+0001"
+	if dcmVal != expected {
+		t.Errorf("DCM(): expected '%v', but got '%v'", expected, dcmVal)
 	}
 }

write.go

@@ -19,7 +19,7 @@ import (
 var (
 	// ErrorUnimplemented is for not yet finished things.
 	ErrorUnimplemented = errors.New("this functionality is not yet implemented")
-	// ErrorMismatchValueTypeAndVR is for when there's a discrepency betweeen the ValueType and what the VR specifies.
+	// ErrorMismatchValueTypeAndVR is for when there's a discrepancy between the ValueType and what the VR specifies.
 	ErrorMismatchValueTypeAndVR = errors.New("ValueType does not match the VR required")
 	// ErrorUnexpectedValueType indicates an unexpected value type was seen.
 	ErrorUnexpectedValueType = errors.New("Unexpected ValueType")