win32: tcc-win32.txt: fixup 2 mingw includes note

Note to self: review few times before pushing next time.

win32/tcc-win32.txt

@@ -89,16 +89,21 @@
     If the latest mingw headers don't play nice with the TinyCC headers,
     there's also TinyCC-specific win32 headers package which contains
     an "include" dir. Files in that dir are additional to the built-in
-    include files. At the time ow writing there are three files in that
-    package which also exist as built-in:
+    include files. At the time of writing there are few files in that
+    package which also exist as built-in headers:
 
         unistd.h
+        winapi/qos.h
+        winapi/winnls.h
+        winapi/ws2ipdef.h
+        winapi/ws2tcpip.h
         winapi/windows.h
         winapi/winsock2.h
 
-    unistd.h and winapi/windows.h should overwrite the built-in headers,
-    while the built-in winapi/winsock2.h should be kept, as the one at
-    the external package is older and with less definitions.
+    With the exception of winapi/winsock2.h, these should overwrite the
+    built-in headers (unistd.h and winapi/windows.h are enhanced in that
+    package, winapi/winsock2.h is older than the built-in file - and with
+    less definitions, and the rest are identical).
 
     The latest package at the time of writing is winapi-full-for-0.9.27.zip
     which works well also with TinyCC 0.9.28rc, and is available at: