package/pigz: switch site to HTTPS

Prefer HTTPS for source downloads.
No functional change; hashes unchanged.
Align comment in .hash and Config.in.

Signed-off-by: Preyas <preyas17@zohomail.in>
[Julien: also update Config.in package home page]
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/pigz/Config.in

@@ -8,7 +8,7 @@ config BR2_PACKAGE_PIGZ
 	  processors and multiple cores to the hilt when compressing
 	  data.
 
-	  http://www.zlib.net/pigz/
+	  https://www.zlib.net/pigz/
 
 comment "pigz needs a toolchain w/ threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS

package/pigz/pigz.hash

@@ -1,4 +1,4 @@
-# From http://zlib.net/pigz
+# From https://zlib.net/pigz
 sha256  eb872b4f0e1f0ebe59c9f7bd8c506c4204893ba6a8492de31df416f0d5170fd0  pigz-2.8.tar.gz
 
 # Locally calculated

package/pigz/pigz.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 PIGZ_VERSION = 2.8
-PIGZ_SITE = http://zlib.net/pigz
+PIGZ_SITE = https://zlib.net/pigz
 PIGZ_DEPENDENCIES = zlib
 HOST_PIGZ_DEPENDENCIES = host-zlib
 PIGZ_LICENSE = Zlib