Ensure codespell failures fail CI (#5761)

With the `write` option, codespell fixes issues (which is a nice
behavior when we run it locally), but it also returns a 0 status code
(except if some failures couldn't be fixed).

So in order to actually fix the CI on a failing codespell, we need to
ensure the working directory is clean.

.github/workflows/codespell.yaml

@@ -12,3 +12,4 @@ jobs:
  uses: actions/checkout@v4
  - name: Codespell
  run: make codespell
+ - run: make check-clean-work-tree

baggage/baggage.go

@@ -50,7 +50,7 @@ type Property struct {
 // component boundaries may impose their own restrictions on Property key.
 // For example, the W3C Baggage specification restricts the Property keys to strings that
 // satisfy the token definition from RFC7230, Section 3.2.6.
-// For maximum compatibility, alpha-numeric value are strongly recommended to be used as Property key.
+// For maximum compatibility, alphanumeric value are strongly recommended to be used as Property key.
 func NewKeyProperty(key string) (Property, error) {
  if !validateBaggageName(key) {
  return newInvalidProperty(), fmt.Errorf("%w: %q", errInvalidKey, key)
@@ -90,7 +90,7 @@ func NewKeyValueProperty(key, value string) (Property, error) {
 // component boundaries may impose their own restrictions on Property key.
 // For example, the W3C Baggage specification restricts the Property keys to strings that
 // satisfy the token definition from RFC7230, Section 3.2.6.
-// For maximum compatibility, alpha-numeric value are strongly recommended to be used as Property key.
+// For maximum compatibility, alphanumeric value are strongly recommended to be used as Property key.
 func NewKeyValuePropertyRaw(key, value string) (Property, error) {
  if !validateBaggageName(key) {
  return newInvalidProperty(), fmt.Errorf("%w: %q", errInvalidKey, key)
@@ -287,7 +287,7 @@ func NewMember(key, value string, props ...Property) (Member, error) {
 // component boundaries may impose their own restrictions on baggage key.
 // For example, the W3C Baggage specification restricts the baggage keys to strings that
 // satisfy the token definition from RFC7230, Section 3.2.6.
-// For maximum compatibility, alpha-numeric value are strongly recommended to be used as baggage key.
+// For maximum compatibility, alphanumeric value are strongly recommended to be used as baggage key.
 func NewMemberRaw(key, value string, props ...Property) (Member, error) {
  m := Member{
  key: key,

sdk/metric/internal/exemplar/filtered_reservoir.go

@@ -41,7 +41,7 @@ func NewFilteredReservoir[N int64 | float64](f Filter, r Reservoir) FilteredRese
 
 func (f *filteredReservoir[N]) Offer(ctx context.Context, val N, attr []attribute.KeyValue) {
  if f.filter(ctx) {
- // only record the current time if we are sampling this measurment.
+ // only record the current time if we are sampling this measurement.
  f.reservoir.Offer(ctx, time.Now(), NewValue(val), attr)
  }
 }