fix perMin throttle config for fpc

[bdoyle0182]

Description

Quick fix for the conf key in the default conf file for the new per min throttle config for fpc I made yesterday. The config key in the configuration file was incorrect. I've verified this fixes the issue. I also have verified that per minute throttling now works on the new scheduler same as the old scheduler when setting this config.

Related issue and scope

N/A

My changes affect the following components

• API
• Controller
• Message Bus (e.g., Kafka)
• Loadbalancer
• Scheduler
• Invoker
• Intrinsic actions (e.g., sequences, conductors)
• Data stores (e.g., CouchDB)
• Tests
• Deployment
• CLI
• General tooling
• Documentation

Types of changes

• Bug fix (generally a non-breaking change which closes an issue).
• Enhancement or new feature (adds new functionality).
• Breaking change (a bug fix or enhancement which changes existing behavior).

Checklist:

• I signed an Apache CLA.
• I reviewed the style guides and followed the recommendations (Travis CI will check :).
• I added tests to cover my changes.
• My changes require further changes to the documentation.
• I updated the documentation where necessary.

[codecov-commenter]

Codecov Report

Merging #5245 (c1d56d2) into master (0912c73) will decrease coverage by 4.93%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5245      +/-   ##
==========================================
- Coverage   78.82%   73.89%   -4.94%     
==========================================
  Files         238      238              
  Lines       13996    14206     +210     
  Branches      561      569       +8     
==========================================
- Hits        11033    10498     -535     
- Misses       2963     3708     +745     

Impacted Files	Coverage Δ
...core/database/cosmosdb/RxObservableImplicits.scala	0.00% <0.00%> (-100.00%)	⬇️
...ore/database/cosmosdb/cache/CacheInvalidator.scala	0.00% <0.00%> (-100.00%)	⬇️
...e/database/cosmosdb/cache/ChangeFeedConsumer.scala	0.00% <0.00%> (-100.00%)	⬇️
...core/database/cosmosdb/CosmosDBArtifactStore.scala	0.00% <0.00%> (-95.48%)	⬇️
...sk/core/database/cosmosdb/CosmosDBViewMapper.scala	0.00% <0.00%> (-93.90%)	⬇️
...tabase/cosmosdb/cache/CacheInvalidatorConfig.scala	0.00% <0.00%> (-92.31%)	⬇️
...enwhisk/connector/kafka/KamonMetricsReporter.scala	0.00% <0.00%> (-83.34%)	⬇️
...e/database/cosmosdb/cache/KafkaEventProducer.scala	0.00% <0.00%> (-78.58%)	⬇️
...whisk/core/database/cosmosdb/CosmosDBSupport.scala	0.00% <0.00%> (-74.08%)	⬇️
...ore/database/azblob/AzureBlobAttachmentStore.scala	11.53% <0.00%> (-60.58%)	⬇️
... and 32 more

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