Docs: Update README.md (#1259)

* Update README.md

* dumb commit to trigger the tests

README.md

@@ -2,7 +2,7 @@
 [![Test Package Document](https://github.com/MobilityData/gtfs-validator/workflows/Test%20Package%20Document/badge.svg)](https://github.com/MobilityData/gtfs-validator/actions?query=workflow%3A%22Test+Package+Document%22) ![End to end](https://github.com/MobilityData/gtfs-validator/workflows/End%20to%20end/badge.svg) ![End to end big](https://github.com/MobilityData/gtfs-validator/workflows/End%20to%20end%20big/badge.svg) ![End to end 100](https://github.com/MobilityData/gtfs-validator/workflows/End%20to%20end%20100/badge.svg) [![Rule acceptance tests](https://github.com/MobilityData/gtfs-validator/actions/workflows/acceptance_test.yml/badge.svg)](https://github.com/MobilityData/gtfs-validator/actions/workflows/acceptance_test.yml) ![Docker image](https://github.com/MobilityData/gtfs-validator/actions/workflows/docker.yml/badge.svg) [![Join the gtfs-validator chat](https://badgen.net/badge/slack/%20/green?icon=slack)](https://bit.ly/mobilitydata-slack)
 
 
-A [General Transit Feed Specification (GTFS) Schedule](https://gtfs.mobilitydata.org/spec/gtfs-schedule) (static) feed validator, maintained by [MobilityData](www.mobilitydata.org).
+A [General Transit Feed Specification (GTFS) Schedule](https://gtfs.mobilitydata.org/spec/gtfs-schedule) (static) feed validator, maintained by [MobilityData](www.mobilitydata.org). 
 
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 <p align="center">
@@ -82,7 +82,7 @@ You can run this validator using a GTFS dataset on your computer, or from a URL.
   - here is an example of what the command could look like:  `java -jar gtfs-validator-cli.jar -i /myDirectory/gtfs.zip -o output`
 
 - To validate a GTFS dataset from a URL, run the following command in the terminal, replacing the text in brackets:
-  - `java -jar {name of the jar file} -i {input to the GTFS file} -o {name of the output directory that will be created}`
+  - `java -jar {name of the jar file} -u {URL to the GTFS file} -o {name of the output directory that will be created}`
   - here is an example of what the command could look like: `java -jar gtfs-validator-cli.jar -u https://www.abc.com/gtfs.zip -o output`
 
 More detailed instructions with all the parameters that exists are available on our ["Usage"](/docs/USAGE.md) page.