Revert "fix: wrong fold option in usage functions"

This reverts commit 7ae365f692.

My visions have betrayed me.

agenda

@@ -27,7 +27,7 @@ AGENDA_DEFAULT=${AGENDA_DEFAULT:-"agenda"}
 AGENDA_TEMPLATE=${AGENDA_TEMPLATE:-"__agenda_default_template"}
 
 __usage() {
-	fold -w <<-USAGE
+	fold -s <<-USAGE
 	Usage: ${0##*/} [-bcE] [-e <extension>] [-t <name>] [<date>]
 	       ${0##*/} <subcommand>
 
@@ -73,7 +73,7 @@ __main() {
 }
 
 __edit_usage() {
-	fold -w <<-USAGE
+	fold -s <<-USAGE
 	Usage: ${0##*/} edit [-bcE] [-e <extension>] [-t <name>] [<date>]
 
 	Edit a single agenda note file.
@@ -167,7 +167,7 @@ __edit() {
 }
 
 __list_usage() {
-	fold -w <<-USAGE
+	fold -s <<-USAGE
 	Usage: ${0##*/} list [-ac] [-u <date>] [-t <name>] [<date>]
 
 	List a range of agenda note files.