[3.15] Docs: Fix mimalloc allocator values and typos in C API init docs (GH-160666) (#160715)

(cherry picked from commit 210e7ab)

Co-authored-by: Manoj K M <manojkm24dev@gmail.com>

Author: miss-islington

Doc/c-api/init_config.rst

@@ -880,9 +880,9 @@ PyPreConfig
       * ``PYMEM_ALLOCATOR_PYMALLOC_DEBUG`` (``6``): :ref:`Python pymalloc
         memory allocator <pymalloc>` with :ref:`debug hooks
         <pymem-debug-hooks>`.
-      * ``PYMEM_ALLOCATOR_MIMALLOC`` (``6``): use ``mimalloc``, a fast
+      * ``PYMEM_ALLOCATOR_MIMALLOC`` (``7``): use ``mimalloc``, a fast
         malloc replacement.
-      * ``PYMEM_ALLOCATOR_MIMALLOC_DEBUG`` (``7``): use ``mimalloc``, a fast
+      * ``PYMEM_ALLOCATOR_MIMALLOC_DEBUG`` (``8``): use ``mimalloc``, a fast
         malloc replacement with :ref:`debug hooks <pymem-debug-hooks>`.
 
 

Doc/c-api/interp-lifecycle.rst

@@ -51,7 +51,6 @@ The following functions can be safely called before Python is initialized:
   * :c:func:`Py_GetCopyright`
   * :c:func:`Py_GetPlatform`
   * :c:func:`Py_GetVersion`
-  * :c:func:`Py_IsInitialized`
 
 * Utilities:
 
@@ -762,7 +761,7 @@ deleted. This can be done using interpreter views.
 
    An opaque view of an interpreter.
 
-   This is a thread-safe way to access an interpreter that may have be
+   This is a thread-safe way to access an interpreter that may be
    finalizing or already destroyed.
 
    .. versionadded:: 3.15