clairfy a bit and fix typos

Author: leofang

src/array_api_stubs/_draft/array_object.py

@@ -355,10 +355,11 @@ def __dlpack__(
             raise ``BufferError``.
         copy: Optional[bool]
             boolean indicating whether or not to copy the input. If ``True``, the
-            function must always copy (paerformed by the producer), potentially allowing
-            data movement across the library (and/or device) boundary. If ``False``,
-            the function must never copy. If ``None``, the function must reuse existing
-            memory buffer if possible and copy otherwise. Default: ``None``.
+            function must always copy (performed by the producer). If ``False``, the
+            function must never copy, and raise a ``BufferError`` in case a copy is
+            deemed necessary (e.g. if a cross-device data movement is requested, and
+            it is not possible without a copy). If ``None``, the function must reuse
+            the existing memory buffer if possible and copy otherwise. Default: ``None``.
 
             When a copy happens, the ``DLPACK_FLAG_BITMASK_IS_COPIED`` flag must be set.
 

src/array_api_stubs/_draft/creation_functions.py

@@ -228,10 +228,10 @@ def from_dlpack(
     x: object
         input (array) object.
     device: Optional[device]
-        device on which to place the created array. If ``device`` is ``None`` and ``x`` supports DLPack, the output array device must be inferred from ``x.device``. Default: ``None``.
+        device on which to place the created array. If ``device`` is ``None`` and ``x`` supports DLPack, the output array must be on the same device as ``x``. Default: ``None``.
 
         The v2023.12 standard only mandates that a compliant library must offer a way for ``from_dlpack`` to create an array on CPU (using
-        a library-specifc way to represent the CPU device (``kDLCPU`` in DLPack) e.g. a ``"CPU"`` string or a ``Device("CPU")`` object).
+        a library-specific way to represent the CPU device (``kDLCPU`` in DLPack) e.g. a ``"CPU"`` string or a ``Device("CPU")`` object).
         If the array library does not support the CPU device and needs to outsource to another (compliant) array library, it may do so
         with a clear user documentation and/or run-time warning. If a copy must be made to enable this, and ``copy`` is set to ``False``,
         the function must raise ``ValueError``.