headers: Replace mentions of ucrtbase with the more general name ucrt

ucrtbase.dll is just the name of one DLL, while one just as well can
link against the forwarding DLLs named api-ms-win-crt-*.dll (as is
done via libucrt.a).

Signed-off-by: Martin Storsjö <martin@martin.st>
diff --git a/mingw-w64-headers/crt/stdlib.h b/mingw-w64-headers/crt/stdlib.h
index deceef8..7d758f3 100644
--- a/mingw-w64-headers/crt/stdlib.h
+++ b/mingw-w64-headers/crt/stdlib.h
@@ -498,7 +498,7 @@
   /* libmingwex.a provides a c99-compliant strtod() exported as __strtod() */
   extern double __cdecl __MINGW_NOTHROW
   __strtod (const char * __restrict__ , char ** __restrict__);
-// The ucrtbase version of strtod is C99 compliant, so we don't need to redirect it to the mingw version.
+// The UCRT version of strtod is C99 compliant, so we don't need to redirect it to the mingw version.
 #if !defined(__USE_MINGW_STRTOX) && !defined(_UCRT)
 #define strtod __strtod
 #endif /* !defined(__USE_MINGW_STRTOX) */
diff --git a/mingw-w64-headers/crt/time.h b/mingw-w64-headers/crt/time.h
index 481d3d3..4019cb4 100644
--- a/mingw-w64-headers/crt/time.h
+++ b/mingw-w64-headers/crt/time.h
@@ -248,7 +248,7 @@
 #define __MINGW_ATTRIB_DEPRECATED_UCRT \
     __MINGW_ATTRIB_DEPRECATED_MSG( \
         "Only provided for source compatibility; this variable might " \
-        "not always be accurate when linking to ucrtbase.dll.")
+        "not always be accurate when linking to UCRT.")
 #else
 #define __MINGW_ATTRIB_DEPRECATED_UCRT
 #endif