docs: Updated chip independednt api-reference chapters for c6 and h2

docs/en/api-reference/system/mem_alloc.rst

@@ -34,7 +34,7 @@ DRAM uses capability ``MALLOC_CAP_8BIT`` (accessible in single byte reads and wr
 
 When calling ``malloc()``, the ESP-IDF ``malloc()`` implementation internally calls cpp:func:`heap_caps_malloc_default(size)`. This will allocate memory with capability ``MALLOC_CAP_DEFAULT``, which is byte-addressable.
 
-Because malloc uses the capabilities-based allocation system, memory allocated using :cpp:func:`heap_caps_malloc` can be freed by calling
+Because ``malloc()`` uses the capabilities-based allocation system, memory allocated using :cpp:func:`heap_caps_malloc` can be freed by calling
 the standard ``free()`` function.
 
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