Fix some grammatical errors in native_client_sdk/

native_client_sdk/src/build_tools/debug_server/gdb_rsp/host.h

Index: native_client_sdk/src/build_tools/debug_server/gdb_rsp/host.h
diff --git a/native_client_sdk/src/build_tools/debug_server/gdb_rsp/host.h b/native_client_sdk/src/build_tools/debug_server/gdb_rsp/host.h
index 3f01efe5cf231e7d92e13e492951a638d18c39a6..09f923496caabfdc66ef62b4e6a359ded708be78 100644
--- a/native_client_sdk/src/build_tools/debug_server/gdb_rsp/host.h
+++ b/native_client_sdk/src/build_tools/debug_server/gdb_rsp/host.h
@@ -7,7 +7,7 @@
 //  the host side of the connection.  The host behaves like a cache, and
 //  is responsible for syncronization of state between the Target and Host.
 //  For example, the Host is responsible for updating the thread context
-//  before restarting the Target, and for updating it's internal array of
+//  before restarting the Target, and for updating its internal array of
 //  threads whenever the Target stops.
 
 #ifndef NATIVE_CLIENT_GDB_RSP_HOST_H_