package/mutt: fix activation of openssl on imap

Activation of openssl for imap is broken since commit
0fcd010a2db771c259224ad1d025fb4c5a9baf3b because of the following typo:
BR2_PACKAGET_MUTT_IMAP

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit dc1ec5b78bb9cc6ccc1ffb7367eb8ce68dc04fa8)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mutt/mutt.mk

@@ -48,7 +48,7 @@ MUTT_CONF_OPTS += --disable-pop
 endif
 
 # SSL support is only used by imap or pop3 module
-ifneq ($(BR2_PACKAGET_MUTT_IMAP)$(BR2_PACKAGE_MUTT_POP3),)
+ifneq ($(BR2_PACKAGE_MUTT_IMAP)$(BR2_PACKAGE_MUTT_POP3),)
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 MUTT_DEPENDENCIES += openssl
 MUTT_CONF_OPTS += --with-ssl=$(STAGING_DIR)/usr