bug#73561: Acknowledgement (Couple of typos in the documentation)

Found two more typos today:

From 0c090dcfe3b156436f35b52e4492575b71cf621f Mon Sep 17 00:00:00 2001
From: Matthias Kaak <[email protected]>
Date: Mon, 30 Sep 2024 13:10:43 +0000
Subject: [PATCH] Fixed a couple typos in the documentation

* doc/ref/apu-scheduling.texi: Fixed one typo of "if" from "ff"
* doc/ref/apu-undocumented.texi: Fixed one typo of "if" from "ff"

Signed-off-by: Matthias Kaak <[email protected]>
---
 doc/ref/api-scheduling.texi   | 2 +-
 doc/ref/api-undocumented.texi | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/ref/api-scheduling.texi b/doc/ref/api-scheduling.texi
index d79808049..af95ead39 100644
--- a/doc/ref/api-scheduling.texi
+++ b/doc/ref/api-scheduling.texi
@@ -80,7 +80,7 @@ Once @var{body} or @var{handler} returns, the return value is made the
 
 @deffn {Scheme Procedure} thread? obj
 @deffnx {C Function} scm_thread_p (obj)
-Return @code{#t} ff @var{obj} is a thread; otherwise, return
+Return @code{#t} if @var{obj} is a thread; otherwise, return
 @code{#f}.
 @end deffn
 
diff --git a/doc/ref/api-undocumented.texi b/doc/ref/api-undocumented.texi
index 2967c95f4..63491c9fb 100644
--- a/doc/ref/api-undocumented.texi
+++ b/doc/ref/api-undocumented.texi
@@ -202,7 +202,7 @@ they are printed in turn, each one followed by a newline.
 
 @deffn {Scheme Procedure} valid-object-procedure? proc
 @deffnx {C Function} scm_valid_object_procedure_p (proc)
-Return @code{#t} ff @var{proc} is a procedure that can be used with @code{set-object-procedure}.  It is always valid to use a closure constructed by @code{lambda}.
+Return @code{#t} if @var{proc} is a procedure that can be used with @code{set-object-procedure}.  It is always valid to use a closure constructed by @code{lambda}.
 @end deffn
 
 @deffn {Scheme Procedure} %get-pre-modules-obarray
-- 
2.45.2