DOC: Correct threads reference, plus minor changes

Author: j-t-1

pypdf/_reader.py

@@ -419,8 +419,8 @@ def metadata(self) -> Optional[DocumentInformation]:
         """
         Retrieve the PDF file's document information dictionary, if it exists.
 
-        Note that some PDF files use metadata streams instead of document 
-        information dictionaries, and these metadata streams will not be 
+        Note that some PDF files use metadata streams instead of document
+        information dictionaries, and these metadata streams will not be
         accessed by this function.
         """
         if TK.INFO not in self.trailer:

pypdf/_writer.py

@@ -464,7 +464,7 @@ def pages(self) -> List[PageObject]:
         Property that emulates a list of :class:`PageObject<pypdf._page.PageObject>`.
         this property allows to get a page or  a range of pages.
 
-        It also provides capability to remove a page or range of pages from 
+        It also provides capability to remove a page or range of pages from
         the list (through del operator).
         Note: only the page entry is removed, as the objects beneath can be used
         elsewhere.
@@ -976,6 +976,7 @@ def reattach_fields(
         Args:
             page: page to analyze.
                   If none is provided, all pages will be analyzed.
+
         Returns:
             list of reattached fields.
         """