docs: fixed some typos, formatting, grammar (#11540)

# Which Problems Are Solved

- Typos
- Punctuation
- Markdown table formatting
- ...

(A bunch of issues my editor gave)

# How the Problems Are Solved


# Additional Changes


# Additional Context

internal/integration/assert.go

@@ -48,7 +48,7 @@ type ResourceListDetailsMsg interface {
 // It targets API v2 messages that have the `GetDetails()` method.
 //
 // Dynamically generated values are not compared with expected.
-// Instead a sanity check is performed.
+// Instead, a sanity check is performed.
 // For the sequence a non-zero value is expected.
 // If the change date is populated, it is checked with a tolerance of 1 minute around Now.
 //
@@ -149,7 +149,7 @@ func AssertGrpcStatus(t assert.TestingT, expected codes.Code, err error) {
 //
 // As [assert.Equal] is based on reflection, comparing 2 proto messages sometimes fails,
 // due to their internal state.
-// Expected messages are usually with a vanilla state, eg only exported fields contain data.
+// Expected messages are usually with a vanilla state, e.g. only exported fields contain data.
 // Actual messages obtained from the gRPC client had unexported fields with data.
 // This makes them hard to compare.
 func EqualProto(t testing.TB, expected, actual proto.Message) bool {

internal/integration/config.go

@@ -28,7 +28,7 @@ var (
 	loadedConfig Config
 )
 
-// TmpDir returns the absolute path to the projects's temp directory.
+// TmpDir returns the absolute path to the project's temp directory.
 func TmpDir() string {
 	return tmpDir
 }

internal/integration/sink/subscription.go

@@ -35,7 +35,7 @@ type Subscription struct {
 // handler, after Subscribe has returned.
 // Multiple subscription may be active on a single channel.
 // Each request is always forwarded to each Subscription.
-// Close must be called to cleanup up the Subscription's channel and go routine.
+// Close must be called to clean up the Subscription's channel and go routine.
 func Subscribe(ctx context.Context, ch Channel) *Subscription {
 	u := url.URL{
 		Scheme: "ws",