DOC: 10 minutes - <TAB> completion section showing inconsistent suggestions
#### Code Sample, a copy-pastable example if possible

From the very end of the section "[Object Creation](https://pandas.pydata.org/pandas-docs/stable/getting_started/10min.html#object-creation)"
```python

In [12]: df2.<TAB>  # noqa: E225, E999
df2.A                  df2.bool
df2.abs                df2.boxplot
df2.add                df2.C
df2.add_prefix         df2.clip
df2.add_suffix         df2.clip_lower
df2.align              df2.clip_upper
df2.all                df2.columns
df2.any                df2.combine
df2.append             df2.combine_first
df2.apply              df2.consolidate
df2.applymap
df2.D
```
And the following text:
```rst
As you can see, the columns ``A``, ``B``, ``C``, and ``D`` are automatically
tab completed. ``E`` is there as well; the rest of the attributes have been
truncated for brevity.
```

#### Problem description
In the text we read that columns `A`, `B`, `C` and  `D` are shown. However, `df2.B` isn't shown at all

#### Expected Output

I think we could just add some more <TAB> completions, along side `df2.B` to make the documentation more consistent to what is being said.

Something similar to:

```python

In [12]: df2.<TAB>  # noqa: E225, E999
df2.A                  df2.bool
df2.abs                df2.boxplot
df2.add                df2.C
df2.add_prefix         df2.clip
df2.add_suffix         df2.columns
df2.align              df2.combine
df2.all                df2.combine_first
df2.any                df2.D
df2.append             df2.describe
df2.apply              df2.diff
df2.applymap           df2.div
df2.B                  df2.divide
```

##### Note

I'd like to know what does `# noqa: E225, E999` means. I didn't see this reference early in this guide