fix redis doc (#1808)

doc string rendered at
https://opentelemetry-python-contrib.readthedocs.io/en/latest/instrumentation/redis/redis.html
refers to `opentelemetry-instrumentation` executable which appears to be a typo

Co-authored-by: Shalev Roda <65566801+shalevr@users.noreply.github.com>

Author: pmcollins

CHANGELOG.md

@@ -7,7 +7,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
-
 ### Added
 
 - Make Flask request span attributes available for `start_span`. 

instrumentation/opentelemetry-instrumentation-redis/src/opentelemetry/instrumentation/redis/__init__.py

@@ -16,7 +16,7 @@
 Instrument `redis`_ to report Redis queries.
 
 There are two options for instrumenting code. The first option is to use the
-``opentelemetry-instrumentation`` executable which will automatically
+``opentelemetry-instrument`` executable which will automatically
 instrument your Redis client. The second is to programmatically enable
 instrumentation via the following code: