Fix .. code-block :: directives in decimal.rst (GH-22571)

diff --git a/Doc/c-api/decimal.rst b/Doc/c-api/decimal.rst
index f530571ebae5771d343eefd1875008591de695a3..94cc4a7b845791379f469bef8545e441eac6a237 100644 (file)
--- a/Doc/c-api/decimal.rst
+++ b/Doc/c-api/decimal.rst
@@ -16,7 +16,7 @@ Initialize
 Typically, a C extension module that uses the decimal API will do these
 steps in its init function:
 
-.. code-block::
+.. code-block:: c
 
     #include "pydecimal.h"
 
@@ -88,7 +88,7 @@ Data structures
 
 The conversion functions use the following status codes and data structures:
 
-.. code-block::
+.. code-block:: c
 
    /* status cases for getting a triple */
    enum mpd_triple_class {
@@ -126,7 +126,7 @@ Functions
    For simplicity, the usage of the function and all special cases are
    explained in code form and comments:
 
-.. code-block::
+.. code-block:: c
 
     triple = PyDec_AsUint128Triple(dec);
     switch (triple.tag) {