DOC: Fix some typos and incorrect markups

[skip cirrus] [skip azp] [skip actions]

Author: koyuki7w

doc/source/dev/howto-docs.rst

@@ -376,7 +376,7 @@ membergroups and members-only options:
        :outline:
        :no-link:
 
-Checkout the `doxygenclass documentation <https://breathe.readthedocs.io/en/latest/class.html#class-example>_`
+Checkout the `doxygenclass documentation <https://breathe.readthedocs.io/en/latest/class.html#class-example>`__
 for more details and to see it in action.
 
 ``doxygennamespace``

doc/source/reference/c-api/array.rst

@@ -1802,14 +1802,14 @@ the functions that must be implemented for each slot.
    "default" value that may differ from the "identity" value normally used.
    For example:
 
-       - ``0.0`` is the default for ``sum([])``.  But ``-0.0`` is the correct
-         identity otherwise as it preserves the sign for ``sum([-0.0])``.
-       - We use no identity for object, but return the default of ``0`` and
-         ``1`` for the empty ``sum([], dtype=object)`` and
-         ``prod([], dtype=object)``.
-         This allows ``np.sum(np.array(["a", "b"], dtype=object))`` to work.
-       - ``-inf`` or ``INT_MIN`` for ``max`` is an identity, but at least
-         ``INT_MIN`` not a good *default* when there are no items.
+   - ``0.0`` is the default for ``sum([])``.  But ``-0.0`` is the correct
+     identity otherwise as it preserves the sign for ``sum([-0.0])``.
+   - We use no identity for object, but return the default of ``0`` and
+     ``1`` for the empty ``sum([], dtype=object)`` and
+     ``prod([], dtype=object)``.
+     This allows ``np.sum(np.array(["a", "b"], dtype=object))`` to work.
+   - ``-inf`` or ``INT_MIN`` for ``max`` is an identity, but at least
+     ``INT_MIN`` not a good *default* when there are no items.
 
    *initial* is a pointer to the data for the initial value, which should be
    filled in. Returns -1, 0, or 1 indicating error, no initial value, and the
@@ -3912,7 +3912,7 @@ are defined:
 
 * If neither is defined, the C-API is declared to
   ``static void **PyArray_API``, so it is only visible within the
-  compilation unit/file using ``#includes numpy/arrayobject.h``.
+  compilation unit/file using ``#include <numpy/arrayobject.h>``.
 * If only ``PY_ARRAY_UNIQUE_SYMBOL`` is defined (it could be empty) then
   the it is declared to a non-static ``void **`` allowing it to be used
   by other files which are linked.

doc/source/user/absolute_beginners.rst

@@ -235,7 +235,7 @@ only one "data type". The data type is recorded in the ``dtype`` attribute.
     >>> a.dtype
     dtype('int64')  # "int" for integer, "64" for 64-bit
 
-ref:`Read more about array attributes here <arrays.ndarray>` and learn about
+:ref:`Read more about array attributes here <arrays.ndarray>` and learn about
 :ref:`array objects here <arrays>`.
 
 How to create a basic array