[docs] Missing periods at the end of sentences (issue 25161)

[vadmium+py at gmail.com]

https://bugs.python.org/review/25161/diff/15569/Doc/library/http.cookiejar.rst
File Doc/library/http.cookiejar.rst (right):

https://bugs.python.org/review/25161/diff/15569/Doc/library/http.cookiejar.rst#newcode543
Doc/library/http.cookiejar.rst:543: apply RFC 2965 rules on unverifiable
transactions even to Netscape cookies.
This could also do with a capital letter at the start for Apply.

https://bugs.python.org/review/25161/diff/15569/Doc/library/tkinter.ttk.rst
File Doc/library/tkinter.ttk.rst (right):

https://bugs.python.org/review/25161/diff/15569/Doc/library/tkinter.ttk.rst#newcode114
Doc/library/tkinter.ttk.rst:114: |           | which may only be
specified when the window is created.      |
The whole sentence needs more editing. I suggest something like:

This option is read-only, and may only be specified when the window is
created.

https://bugs.python.org/review/25161/