doc: Update link to the AVR-Libc manual

gcc/ChangeLog:

	* doc/extend.texi (Named Address Spaces): Update link to the
	AVR-Libc manual.

diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 027a08a..5a026c4 100644 (file)
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -1578,7 +1578,7 @@ locates data in flash but
 accesses to these data read from generic address space, i.e.@:
 from RAM,
 so that you need special accessors like @code{pgm_read_byte}
-from @w{@uref{http://nongnu.org/avr-libc/user-manual/,AVR-LibC}}
+from @w{@uref{https://www.nongnu.org/avr-libc/user-manual/,AVR-LibC}}
 together with attribute @code{progmem}.
 
 @noindent