HOW_TO_USE_DOCKER.md - Missing -ItemType File for .env creation (#879)

Update HOW_TO_USE_DOCKER.md

Missing New-Item -ItemType for .env default to a folder when it should be a file (Docker won't run when that happen since a file is expected)

docker/HOW_TO_USE_DOCKER.md

@@ -75,7 +75,7 @@ mintplexlabs/anythingllm
 # Run this in powershell terminal
 $env:STORAGE_LOCATION="$HOME\Documents\anythingllm"; `
 If(!(Test-Path $env:STORAGE_LOCATION)) {New-Item $env:STORAGE_LOCATION -ItemType Directory}; `
-If(!(Test-Path "$env:STORAGE_LOCATION\.env")) {New-Item "$env:STORAGE_LOCATION\.env"}; `
+If(!(Test-Path "$env:STORAGE_LOCATION\.env")) {New-Item "$env:STORAGE_LOCATION\.env" -ItemType File}; `
 docker run -d -p 3001:3001 `
 --cap-add SYS_ADMIN `
 -v "$env:STORAGE_LOCATION`:/app/server/storage" `