freebsd: annotate unstable RAND_MAX

This symbol has changed recently. It needs usage advice. This patch
links to that.

Author: dybucc

src/unix/bsd/freebsdlike/freebsd/freebsd11/mod.rs

@@ -258,11 +258,14 @@ s! {
     }
 }
 
-/// This symbols is prone to change across releases upstream.
+/// This symbol is prone to change across releases upstream.
 /// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const ELAST: c_int = 96;
 
+/// This symbol is prone to change across releases upstream.
+/// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const RAND_MAX: c_int = 0x7fff_fffd;
+
 pub const KI_NSPARE_PTR: usize = 6;
 pub const MINCORE_SUPER: c_int = 0x20;
 /// max length of devicename

src/unix/bsd/freebsdlike/freebsd/freebsd12/mod.rs

@@ -303,9 +303,11 @@ s! {
     }
 }
 
+/// This symbol is prone to change across releases upstream.
+/// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const RAND_MAX: c_int = 0x7fff_fffd;
 
-/// This symbols is prone to change across releases upstream.
+/// This symbol is prone to change across releases upstream.
 /// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const ELAST: c_int = 97;
 

src/unix/bsd/freebsdlike/freebsd/freebsd13/mod.rs

@@ -316,9 +316,11 @@ s! {
     }
 }
 
+/// This symbol is prone to change across releases upstream.
+/// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const RAND_MAX: c_int = 0x7fff_ffff;
 
-/// This symbols is prone to change across releases upstream.
+/// This symbol is prone to change across releases upstream.
 /// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const ELAST: c_int = 97;
 

src/unix/bsd/freebsdlike/freebsd/freebsd14/mod.rs

@@ -318,9 +318,11 @@ s! {
     }
 }
 
+/// This symbol is prone to change across releases upstream.
+/// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const RAND_MAX: c_int = 0x7fff_ffff;
 
-/// This symbols is prone to change across releases upstream.
+/// This symbol is prone to change across releases upstream.
 /// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const ELAST: c_int = 97;
 

src/unix/bsd/freebsdlike/freebsd/freebsd15/mod.rs

@@ -320,9 +320,11 @@ s! {
     }
 }
 
+/// This symbol is prone to change across releases upstream.
+/// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const RAND_MAX: c_int = 0x7fff_ffff;
 
-/// This symbols is prone to change across releases upstream.
+/// This symbol is prone to change across releases upstream.
 /// See the [usage guidelines](crate::#usage-guidelines) for details and use.
 pub const ELAST: c_int = 97;