Improve documentation

The Cosmo API documentation page is pretty good now
https://justine.lol/cosmopolitan/documentation.html

examples/cplusplus.cc

@@ -17,7 +17,7 @@
 │ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
 │ 02110-1301 USA                                                               │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/bits/safemacros.internal.h"
+#include "libc/bits/safemacros.h"
 #include "libc/stdio/stdio.h"
 #include "libc/str/str.h"
 

examples/lstime.c

@@ -9,7 +9,7 @@
 #endif
 #include "libc/alg/alg.h"
 #include "libc/alg/arraylist2.internal.h"
-#include "libc/bits/safemacros.internal.h"
+#include "libc/bits/safemacros.h"
 #include "libc/calls/calls.h"
 #include "libc/calls/struct/dirent.h"
 #include "libc/calls/struct/stat.h"

examples/nesemu1.cc

@@ -13,7 +13,7 @@
 #include "libc/alg/arraylist2.internal.h"
 #include "libc/assert.h"
 #include "libc/bits/bits.h"
-#include "libc/bits/safemacros.internal.h"
+#include "libc/bits/safemacros.h"
 #include "libc/calls/calls.h"
 #include "libc/calls/hefty/spawn.h"
 #include "libc/calls/struct/itimerval.h"