Fix a couple of doc comment references - and many spelling mistakes

sdk/lib/io/secure_socket.dart

Index: sdk/lib/io/secure_socket.dart
diff --git a/sdk/lib/io/secure_socket.dart b/sdk/lib/io/secure_socket.dart
index 7f2e8cccfb6a621b12da4f3288750b2bc53d08a0..c4a3f4e3ced4eb9de54515c490508929e311578a 100644
--- a/sdk/lib/io/secure_socket.dart
+++ b/sdk/lib/io/secure_socket.dart
@@ -30,7 +30,7 @@ abstract class SecureSocket implements Socket {
    * to continue the [SecureSocket] connection.
    *
    * [supportedProtocols] is an optional list of protocols (in decreasing
-   * order of preference) to use during the ALPN protocol negogiation with the
+   * order of preference) to use during the ALPN protocol negotiation with the
    * server.  Example values are "http/1.1" or "h2".  The selected protocol
    * can be obtained via [SecureSocket.selectedProtocol].
    */
@@ -187,7 +187,7 @@ abstract class RawSecureSocket implements RawSocket {
    * to continue the [RawSecureSocket] connection.
    *
    * [supportedProtocols] is an optional list of protocols (in decreasing
-   * order of preference) to use during the ALPN protocol negogiation with the
+   * order of preference) to use during the ALPN protocol negotiation with the
    * server.  Example values are "http/1.1" or "h2".  The selected protocol
    * can be obtained via [RawSecureSocket.selectedProtocol].
    */