Replace http://man7.org links with https://man7.org links.

I suspect the way http:// dies is that browsers just interpret it as
https:// anyway, but there's no reason not to just bulk fix all these at
source.

Change-Id: I38fa91728846d7c33207ef1bdadd4910eac9e941
diff --git a/libc/include/dlfcn.h b/libc/include/dlfcn.h
index d65a409..071d50a 100644
--- a/libc/include/dlfcn.h
+++ b/libc/include/dlfcn.h
@@ -48,7 +48,7 @@
 } Dl_info;
 
 /**
- * [dlopen(3)](http://man7.org/linux/man-pages/man3/dlopen.3.html)
+ * [dlopen(3)](https://man7.org/linux/man-pages/man3/dlopen.3.html)
  * loads the given shared library.
  *
  * Returns a pointer to an opaque handle for use with other <dlfcn.h> functions
@@ -58,7 +58,7 @@
 void* _Nullable dlopen(const char* _Nullable __filename, int __flag);
 
 /**
- * [dlclose(3)](http://man7.org/linux/man-pages/man3/dlclose.3.html)
+ * [dlclose(3)](https://man7.org/linux/man-pages/man3/dlclose.3.html)
  * decrements the reference count for the given shared library (and
  * any libraries brought in by that library's DT_NEEDED entries).
  *
@@ -84,7 +84,7 @@
 int dlclose(void* _Nonnull __handle);
 
 /**
- * [dlerror(3)](http://man7.org/linux/man-pages/man3/dlerror.3.html)
+ * [dlerror(3)](https://man7.org/linux/man-pages/man3/dlerror.3.html)
  * returns a human-readable error message describing the most recent
  * failure from one of the <dlfcn.h> functions on the calling thread.
  *
@@ -97,7 +97,7 @@
 char* _Nullable dlerror(void);
 
 /**
- * [dlsym(3)](http://man7.org/linux/man-pages/man3/dlsym.3.html)
+ * [dlsym(3)](https://man7.org/linux/man-pages/man3/dlsym.3.html)
  * returns a pointer to the symbol with the given name in the shared
  * library represented by the given handle. The handle may have been
  * returned from dlopen(), or can be RTLD_DEFAULT or RTLD_NEXT.
@@ -108,7 +108,7 @@
 void* _Nullable dlsym(void* __BIONIC_COMPLICATED_NULLNESS __handle, const char* _Nullable __symbol);
 
 /**
- * [dlvsym(3)](http://man7.org/linux/man-pages/man3/dlvsym.3.html)
+ * [dlvsym(3)](https://man7.org/linux/man-pages/man3/dlvsym.3.html)
  * returns a pointer to the symbol with the given name and version in the shared
  * library represented by the given handle. The handle may have been
  * returned from dlopen(), or can be RTLD_DEFAULT or RTLD_NEXT.
@@ -119,7 +119,7 @@
 void* _Nullable dlvsym(void* __BIONIC_COMPLICATED_NULLNESS __handle, const char* _Nullable __symbol, const char* _Nullable __version) __INTRODUCED_IN(24);
 
 /**
- * [dladdr(3)](http://man7.org/linux/man-pages/man3/dladdr.3.html)
+ * [dladdr(3)](https://man7.org/linux/man-pages/man3/dladdr.3.html)
  * returns information about the symbol at the given address.
  *
  * Returns non-zero on success, and returns 0 on failure. Note that unlike