Fix misdescription in escapechar
- [ ] closes #23717
- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`

# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=h1) Report
> Merging [#24490](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/41b2b18b94ade34a172483cf8307ce16bbbfc7c1?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/24490/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #24490   +/-   ##
=======================================
  Coverage    92.3%    92.3%           
=======================================
  Files         166      166           
  Lines       52386    52386           
=======================================
  Hits        48357    48357           
  Misses       4029     4029
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.73% <ø> (ø)` | :arrow_up: |
| #single | `43.07% <ø> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/io/parsers.py](https://codecov.io/gh/pandas-dev/pandas/pull/24490/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL3BhcnNlcnMucHk=) | `95.38% <ø> (ø)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24490?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/24490?src=pr&el=footer). Last update [41b2b18...3d257a1](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=h1) Report
> Merging [#24490](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/1ebfd8a9fda12cd68c3e068b777c7a0a2470dfaf?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/24490/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #24490   +/-   ##
=======================================
  Coverage   92.31%   92.31%           
=======================================
  Files         166      166           
  Lines       52412    52412           
=======================================
  Hits        48382    48382           
  Misses       4030     4030
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.73% <ø> (ø)` | :arrow_up: |
| #single | `43.05% <ø> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/io/parsers.py](https://codecov.io/gh/pandas-dev/pandas/pull/24490/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL3BhcnNlcnMucHk=) | `95.38% <ø> (ø)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24490?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/24490?src=pr&el=footer). Last update [1ebfd8a...8bea992](https://codecov.io/gh/pandas-dev/pandas/pull/24490?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 @gfyoung  Thanks for the review. I thought `quoting = 0` is the default for `pandas.read_csv`. Am I looking at the wrong location? https://github.com/pandas-dev/pandas/blob/1ebfd8a9fda12cd68c3e068b777c7a0a2470dfaf/pandas/io/parsers.py#L577-L580

Any suggestion for the description of `escapechar`? My impression was the name `escapechar` itself is already a simple description.  > Thanks for the review. I thought quoting = 0 is the default for pandas.read_csv. Am I looking at the wrong location?

@thoo : Ah, indeed, you are correct.  Then it should be left alone. 🙂 

> Any suggestion for the description of escapechar? My impression was the name escapechar itself is already a simple description.

How about "One-character string used to escape other characters" @gfyoung  Done.  lgtm. over to you @gfyoung  Thanks @thoo !