DOC: Updated docstring DatetimeIndex.ceil
completed the DatetimeIndex.ceil Docstring.

Checklist for the pandas documentation sprint (ignore this if you are doing
an unrelated PR):

- [ ] PR title is "DOC: update the <your-function-or-method> docstring"
- [ ] The validation script passes: `scripts/validate_docstrings.py <your-function-or-method>`
- [ ] The PEP8 style check passes: `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] The html version looks good: `python doc/make.py --single <your-function-or-method>`
- [ ] It has been proofread on language by another sprint participant

Please include the output of the validation script below between the "```" ticks:

```
# paste output of "scripts/validate_docstrings.py <your-function-or-method>" here
# between the "```" (remove this comment, but keep the "```")

```

If the validation script still gives errors, but you think there is a good reason
to deviate in this case (and there are certainly such cases), please state this
explicitly.


Checklist for other PRs (remove this part if you are doing a PR for the pandas documentation sprint):

- [ ] closes #xxxx
- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/20213?src=pr&el=h1) Report
> :exclamation: No coverage uploaded for pull request base (`master@5b0caf4`). [Click here to learn what that means](https://docs.codecov.io/docs/error-reference#section-missing-base-commit).
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/20213/graphs/tree.svg?token=eZ4WkYLtcO&src=pr&height=150&width=650)](https://codecov.io/gh/pandas-dev/pandas/pull/20213?src=pr&el=tree)

```diff
@@            Coverage Diff            @@
##             master   #20213   +/-   ##
=========================================
  Coverage          ?    91.7%           
=========================================
  Files             ?      150           
  Lines             ?    49152           
  Branches          ?        0           
=========================================
  Hits              ?    45074           
  Misses            ?     4078           
  Partials          ?        0
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.08% <ø> (?)` | |
| #single | `41.84% <ø> (?)` | |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/20213?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/indexes/datetimelike.py](https://codecov.io/gh/pandas-dev/pandas/pull/20213/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvaW5kZXhlcy9kYXRldGltZWxpa2UucHk=) | `96.7% <ø> (ø)` | |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/20213?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/20213?src=pr&el=footer). Last update [5b0caf4...4e21b3e](https://codecov.io/gh/pandas-dev/pandas/pull/20213?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 Hello @vikrantkeshari! Thanks for updating the PR.

 - In the file [`pandas/core/indexes/datetimelike.py`](https://github.com/pandas-dev/pandas/blob/4e21b3ea8920e61d20fa9b5652e60ff665bef09a/pandas/core/indexes/datetimelike.py), following are the PEP8 issues :

> [Line 158:1](https://github.com/pandas-dev/pandas/blob/4e21b3ea8920e61d20fa9b5652e60ff665bef09a/pandas/core/indexes/datetimelike.py#L158): [W293](https://duckduckgo.com/?q=pep8%20W293) blank line contains whitespace
> [Line 162:49](https://github.com/pandas-dev/pandas/blob/4e21b3ea8920e61d20fa9b5652e60ff665bef09a/pandas/core/indexes/datetimelike.py#L162): [W291](https://duckduckgo.com/?q=pep8%20W291) trailing whitespace
> [Line 163:1](https://github.com/pandas-dev/pandas/blob/4e21b3ea8920e61d20fa9b5652e60ff665bef09a/pandas/core/indexes/datetimelike.py#L163): [E101](https://duckduckgo.com/?q=pep8%20E101) indentation contains mixed spaces and tabs
> [Line 163:1](https://github.com/pandas-dev/pandas/blob/4e21b3ea8920e61d20fa9b5652e60ff665bef09a/pandas/core/indexes/datetimelike.py#L163): [W191](https://duckduckgo.com/?q=pep8%20W191) indentation contains tabs



##### Comment last updated on March 14, 2018 at 08:56 Hours UTC Closing as stale.