[logging] fix spelling (#33362)

src/core/ext/filters/logging/logging_sink.h

@@ -63,7 +63,7 @@ class LoggingSink {
 
   struct Entry {
     enum class EventType {
-      kUnkown = 0,
+      kUnknown = 0,
       kClientHeader,
       kServerHeader,
       kClientMessage,
@@ -73,7 +73,7 @@ class LoggingSink {
       kCancel
     };
 
-    enum class Logger { kUnkown = 0, kClient, kServer };
+    enum class Logger { kUnknown = 0, kClient, kServer };
 
     struct Payload {
       std::map<std::string, std::string> metadata;
@@ -94,8 +94,8 @@ class LoggingSink {
 
     absl::uint128 call_id = 0;
     uint64_t sequence_id = 0;
-    EventType type = LoggingSink::Entry::EventType::kUnkown;
-    Logger logger = LoggingSink::Entry::Logger::kUnkown;
+    EventType type = LoggingSink::Entry::EventType::kUnknown;
+    Logger logger = LoggingSink::Entry::Logger::kUnknown;
     Payload payload;
     bool payload_truncated = false;
     Address peer;

src/cpp/ext/gcp/observability_logging_sink.cc

@@ -119,7 +119,7 @@ std::string EventTypeToString(LoggingSink::Entry::EventType type) {
       return "SERVER_TRAILER";
     case LoggingSink::Entry::EventType::kCancel:
       return "CANCEL";
-    case LoggingSink::Entry::EventType::kUnkown:
+    case LoggingSink::Entry::EventType::kUnknown:
     default:
       return "EVENT_TYPE_UNKNOWN";
   }
@@ -131,7 +131,7 @@ std::string LoggerToString(LoggingSink::Entry::Logger type) {
       return "CLIENT";
     case LoggingSink::Entry::Logger::kServer:
       return "SERVER";
-    case LoggingSink::Entry::Logger::kUnkown:
+    case LoggingSink::Entry::Logger::kUnknown:
     default:
       return "LOGGER_UNKNOWN";
   }