[doc]: Fix some rstlint issues (default-role and newlines at end of file).

Doc/README.rst

@@ -91,7 +91,7 @@ Available make targets are:
 
 * "pydoc-topics", which builds a Python module containing a dictionary with
   plain text documentation for the labels defined in
-  `tools/pyspecific.py` -- pydoc needs these to show topic and keyword help.
+  ``tools/pyspecific.py`` -- pydoc needs these to show topic and keyword help.
 
 * "suspicious", which checks the parsed markup for text that looks like
   malformed and thus unconverted reST.

Doc/library/email.errors.rst

@@ -114,4 +114,4 @@ All defect classes are subclassed from :class:`email.errors.MessageDefect`.
   a multiple of 4).  The encoded block was kept as-is.
 
 * :class:`InvalidDateDefect` -- When decoding an invalid or unparsable date field.
-  The original value is kept as-is.
+  The original value is kept as-is.

Doc/library/tk.rst

@@ -44,4 +44,4 @@ alternative `GUI frameworks and tools <https://wiki.python.org/moin/GuiProgrammi
 
 .. Other sections I have in mind are
    Tkinter internals
-   Freezing Tkinter applications
+   Freezing Tkinter applications

Doc/library/tkinter.colorchooser.rst

@@ -26,4 +26,4 @@ the :class:`~tkinter.commondialog.Dialog` class.
 .. seealso::
 
    Module :mod:`tkinter.commondialog`
-      Tkinter standard dialog module
+      Tkinter standard dialog module

Doc/library/tkinter.dnd.rst

@@ -61,4 +61,4 @@ Selection of a target object occurs as follows:
 
 .. seealso::
 
-   :ref:`Bindings-and-Events`
+   :ref:`Bindings-and-Events`

Doc/library/tkinter.messagebox.rst

@@ -36,4 +36,4 @@ limited to:
             askokcancel(title=None, message=None, **options)
             askretrycancel(title=None, message=None, **options)
             askyesno(title=None, message=None, **options)
-            askyesnocancel(title=None, message=None, **options)
+            askyesnocancel(title=None, message=None, **options)