doc: fixed command name in example

send-layout-value → set-layout-value

 doc/rivertile.1.scd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/rivertile.1.scd b/doc/rivertile.1.scd
index b196062..c0658c1 100644
--- a/doc/rivertile.1.scd
+++ b/doc/rivertile.1.scd
@@ -57,7 +57,7 @@ Start *rivertile* with 4 pixels outer padding and 2 main views:
 
 Set the main location of rivertile to top at runtime:
 
-	riverctl send-layout-value rivertile string main_location top
+	riverctl set-layout-value rivertile string main_location top
 
 # AUTHORS