DOC: update readme for repo move
## [Current coverage](https://codecov.io/gh/pandas-dev/pandas/pull/14470?src=pr) is 85.26% (diff: 100%)

> Merging [#14470](https://codecov.io/gh/pandas-dev/pandas/pull/14470?src=pr) into [master](https://codecov.io/gh/pandas-dev/pandas/branch/master?src=pr) will not change coverage

``` diff
@@             master     #14470   diff @@
==========================================
  Files           140        140          
  Lines         50640      50640          
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
==========================================
  Hits          43176      43176          
  Misses         7464       7464          
  Partials          0          0          
```

> Powered by [Codecov](https://codecov.io?src=pr). Last update [794f792...5413e2b](https://codecov.io/gh/pandas-dev/pandas/compare/794f79295484298525dbc8dd3b8ab251ad065e61...5413e2bee095b476488f83944090fd22175cc530?src=pr)
