The `preferred_temporality.py` and `preferred_aggregation.py` sample code doesn't work

[jpjsm]

Describe your environment
Environment: Microsoft Windows [Version 10.0.19042.1889]
Python: 3.10.5
PIP: 22.2.2

running locally.

Steps to reproduce

1. From docs\examples\metrics copy the reader folder to a new location in your drive. In my case it was C:\learning\otel\reader.
2. Create your python virtualenv. From a command prompt: virtualenv .
3. Install requirements. From a command prompt: pip install -r requirements.txt
4. Run the sample code. From a command prompt: python preferred_aggregation.py
5. Run the sample code. From a command prompt: python preferred_temporality.py

What is the expected behavior?
The sample code should run and emit metrics to the console.

What is the actual behavior?

(reader) C:\learning\otel\reader>python preferred_aggregation.py
Traceback (most recent call last):
  File "C:\learning\otel\reader\preferred_aggregation.py", line 31, in <module>
    reader = PeriodicExportingMetricReader(
TypeError: PeriodicExportingMetricReader.__init__() got an unexpected keyword argument 'preferred_aggregation'

(reader) C:\learning\otel\reader>python preferred_temporality.py
Traceback (most recent call last):
  File "C:\learning\otel\reader\preferred_temporality.py", line 32, in <module>
    reader = PeriodicExportingMetricReader(
TypeError: PeriodicExportingMetricReader.__init__() got an unexpected keyword argument 'preferred_temporality'

Additional context
Add any other context about the problem here.

[lzchen]

@jpjsm
Thanks for the find! The examples were not updated after this was merged, so that's why they are erroring. Created a PR to fix the issue.