hurd: Fix MAP_HASSEMAPHORE name

According to upstream fix

https://sourceware.org/git/?p=glibc.git;a=commit;h=c0365d3791666c67ad410007efb52fc9b16d4287

Author: sthibaul

src/unix/hurd/mod.rs

@@ -2732,7 +2732,7 @@ pub const MAP_SHARED: ::c_int = 16;
 pub const MAP_PRIVATE: ::c_int = 0;
 pub const MAP_FIXED: ::c_int = 256;
 pub const MAP_NOEXTEND: ::c_int = 512;
-pub const MAP_HASSEMPHORE: ::c_int = 1024;
+pub const MAP_HASSEMAPHORE: ::c_int = 1024;
 pub const MAP_INHERIT: ::c_int = 2048;
 pub const MAP_FAILED: *mut ::c_void = !0 as *mut ::c_void;
 pub const MADV_NORMAL: ::c_int = 0;