[PATCH 4/4] toaster-manual: spell the json code-block language in lower case

[Trevor Woerner <twoerner@gmail.com>]

Pygments resolves either spelling, so nothing renders differently. Every
other block in the documentation uses the lower-case form.

AI-Generated: codex/claude opus 5 (xhigh)
Signed-off-by: Trevor Woerner <twoerner@gmail.com>
---
 documentation/toaster-manual/reference.rst | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/documentation/toaster-manual/reference.rst b/documentation/toaster-manual/reference.rst
index 3050b5d0f55c..bc065a446a1c 100644
--- a/documentation/toaster-manual/reference.rst
+++ b/documentation/toaster-manual/reference.rst
@@ -408,7 +408,7 @@ itemizes all builds in progress. This file includes the time in seconds since
 each respective build started as well as the progress of the cloning, parsing,
 and task execution. Here is sample output for a build in progress:
 
-.. code-block:: JSON
+.. code-block:: json
 
    {"count": 1,
     "building": [
@@ -442,7 +442,7 @@ Be sure to provide values for host and port. The output is a JSON file that
 itemizes all complete builds, and includes build summary information. Here
 is sample output for a completed build:
 
-.. code-block:: JSON
+.. code-block:: json
 
    {"count": 1,
     "builds": [
@@ -481,7 +481,7 @@ The output is a JSON file that itemizes the specific build and includes
 build summary information. Here is sample output for a specific
 build:
 
-.. code-block:: JSON
+.. code-block:: json
 
    {"build":
       {"distro": "poky",
-- 
2.50.0.173.g8b6f19ccfc3a