docs: update URL in man pages

Also remove the redundant URL in the footer and the redundant
"General Commands Manual" text (scdoc adds that by default based on the
section it seems).

 doc/river.1.scd     | 4 ++--
 doc/riverctl.1.scd  | 4 ++--
 doc/rivertile.1.scd | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/doc/river.1.scd b/doc/river.1.scd
index 9ac29d8f..9da8feae 100644
--- a/doc/river.1.scd
+++ b/doc/river.1.scd
@@ -1,4 +1,4 @@
-RIVER(1) "codeberg.org/river/river" "General Commands Manual"
+RIVER(1)
 
 # NAME
 
@@ -57,7 +57,7 @@ perform other configuration.
 
 Maintained by Isaac Freund <mail@isaacfreund.com> who is assisted by open
 source contributors. For more information about river's development, see
-<https://codeberg.org/river/river>.
+<https://isaacfreund.com/software/river>.
 
 # SEE ALSO
 
diff --git a/doc/riverctl.1.scd b/doc/riverctl.1.scd
index 3c6175e7..d0ac744b 100644
--- a/doc/riverctl.1.scd
+++ b/doc/riverctl.1.scd
@@ -1,4 +1,4 @@
-RIVERCTL(1) "codeberg.org/river/river" "General Commands Manual"
+RIVERCTL(1)
 
 # NAME
 
@@ -550,7 +550,7 @@ Bind Super+Shift+J to swap the focused view with the next visible view:
 
 Maintained by Isaac Freund <mail@isaacfreund.com> who is assisted by open
 source contributors. For more information about river's development, see
-<https://codeberg.org/river/river>.
+<https://isaacfreund.com/software/river>.
 
 # SEE ALSO
 
diff --git a/doc/rivertile.1.scd b/doc/rivertile.1.scd
index b71b1d4e..a73ebde3 100644
--- a/doc/rivertile.1.scd
+++ b/doc/rivertile.1.scd
@@ -1,4 +1,4 @@
-RIVERTILE(1) "codeberg.org/river/river" "General Commands Manual"
+RIVERTILE(1)
 
 # NAME
 
@@ -81,7 +81,7 @@ Set the main count to 3 at runtime:
 
 Maintained by Isaac Freund <mail@isaacfreund.com> who is assisted by open
 source contributors. For more information about river's development, see
-<https://codeberg.org/river/river>.
+<https://isaacfreund.com/software/river>.
 
 # SEE ALSO