[Buildroot] [git commit branch/2022.08.x] docs/manual: fixed some spelling mistakes

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=e101c2edd67be39b8aea95a6386f4663c6fbaf39
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2022.08.x

Fixed some spelling mistakes of countable nouns.

Signed-off-by: Zikui Zhao <zhaozikui at eswincomputing.com>
Reviewed-by: Woodrow Douglass <wdouglass at carnegierobotics.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
(cherry picked from commit a34dcba9ebcda5a1dcb95b332486454776cd305b)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 docs/manual/customize-directory-structure.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/manual/customize-directory-structure.txt b/docs/manual/customize-directory-structure.txt
index a3a7ad4cb9..1249421da2 100644
--- a/docs/manual/customize-directory-structure.txt
+++ b/docs/manual/customize-directory-structure.txt
@@ -27,10 +27,10 @@ to you.
 |           +-- post_image.sh
 |           +-- rootfs_overlay/
 |           |   +-- etc/
-|           |   +-- <some file>
+|           |   +-- <some files>
 |           +-- patches/
 |               +-- foo/
-|               |   +-- <some patch>
+|               |   +-- <some patches>
 |               +-- libbar/
 |                   +-- <some other patches>
 |