DOC: Add tutorial link
## [Current coverage](https://codecov.io/gh/pydata/pandas/pull/13045?src=pr) is **84.07%**

> Merging [#13045](https://codecov.io/gh/pydata/pandas/pull/13045?src=pr) into [master](https://codecov.io/gh/pydata/pandas/branch/master?src=pr) will decrease coverage by **-0.00%**

``` diff
@@             master     #13045   diff @@
==========================================
  Files           136        136          
  Lines         50018      50005    -13   
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
==========================================
- Hits          42052      42040    -12   
+ Misses         7966       7965     -1   
  Partials          0          0          
```
1. 2 files (not in diff) in `pandas/indexes` were modified. [more](https://codecov.io/gh/pydata/pandas/commit/54b15d5f0cca01a4654fe42361a62ec9655276f3/changes?src=pr#70616E6461732F696E6465786573) 
   - Misses `-1` 
   - Hits `-10`
2. 1 files (not in diff) in `pandas` were modified. [more](https://codecov.io/gh/pydata/pandas/commit/54b15d5f0cca01a4654fe42361a62ec9655276f3/changes?src=pr#70616E646173) 
   - Hits `-2`

> Powered by [Codecov](https://codecov.io?src=pr). Last updated by [3ff5af0...54b15d5](https://codecov.io/gh/pydata/pandas/compare/3ff5af080c64081719046a8cf23278d36d7ee2cf...54b15d5f0cca01a4654fe42361a62ec9655276f3)
 @jreback added.

Also, sorry I just realized this remote branch is off of `pydata/pandas` instead of `tomaugspurger/pandas`. I wanted to try out github's online editor process, and apparently when you submit a PR it doesn't automatically branch off your fork (which I guess makes sense).
 thanks @TomAugspurger 
