The file seems to contain perfectly valid rst syntax already, so
rename it to .rst and wire it up in the index.

Message-Id: <20221213101806.46640-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 docs/interop/index.rst                                           | 1 +
 ...tate-Pseudo-encoding.txt => vnc-ledstate-pseudo-encoding.rst} | 0
 2 files changed, 1 insertion(+)
 rename docs/interop/{vnc-ledstate-Pseudo-encoding.txt => vnc-ledstate-pseudo-encoding.rst} (100%)

diff --git a/docs/interop/index.rst b/docs/interop/index.rst
index b7632acb7b..6351ff9ba6 100644
--- a/docs/interop/index.rst
+++ b/docs/interop/index.rst
@@ -23,3 +23,4 @@ are useful for making QEMU interoperate with other software.
    vhost-user-gpu
    vhost-vdpa
    virtio-balloon-stats
+   vnc-ledstate-pseudo-encoding
diff --git a/docs/interop/vnc-ledstate-Pseudo-encoding.txt b/docs/interop/vnc-ledstate-pseudo-encoding.rst
similarity index 100%
rename from docs/interop/vnc-ledstate-Pseudo-encoding.txt
rename to docs/interop/vnc-ledstate-pseudo-encoding.rst
-- 
2.31.1