Adjust case of YOu (#164)

* Case correction

YOu is now You

docs/docs/walkthrough/phase-2/building-preflight-safety-checks.md

@@ -4,7 +4,7 @@ Before moving on to consolidating all of these capabilities into a single alias,
 
 * There are several potential issues that may adveresely affect operation of the system. For example, RF communication with the pump may be compromised. It has also been observed that the CareLink USB stick may become unresponsive or "dead", requiring a reset of the USB ports. Furthermore, in general, the system should not act on stale data. Let's look at some approaches you may consider to address these issues.
 
-Ensuring that your openaps implementation can't act on stale data could be done by deleting all of the report files in the `monitor` directory before the reports are refreshed. YOu may simply use `rm -f` bash command, which removes file(s), while ignoring cases when the file(s) do not exist. If a refresh fails, the data required for subsequent commands will be missing, and they will fail to run. For example, here is an alias that runs the required bash commands: 
+Ensuring that your openaps implementation can't act on stale data could be done by deleting all of the report files in the `monitor` directory before the reports are refreshed. You may simply use `rm -f` bash command, which removes file(s), while ignoring cases when the file(s) do not exist. If a refresh fails, the data required for subsequent commands will be missing, and they will fail to run. For example, here is an alias that runs the required bash commands: 
 
 ```
 openaps alias add gather '! bash -c "rm -f monitor/*; openaps gather-profile && openaps monitor-cgm && openaps monitor-pump && openaps report invoke monitor/iob.json"'