Update the tap user/organization name

Author: catplat

themes/psh-docs/layouts/shortcodes/cli-installation.html

@@ -15,7 +15,7 @@
 title=Homebrew
 highlight=bash
 +++
-brew install platformsh/tap/platformsh-cli
+brew install upsun/tap/platformsh-cli
 <--->
 +++
 title=Scoop
@@ -37,7 +37,7 @@
 title=Homebrew
 highlight=bash
 +++
-brew install platformsh/tap/upsun-cli
+brew install upsun/tap/upsun-cli
 <--->
 +++
 title=Scoop