mset9-play-store: fix mset9 zip name again

This used to be MSET9 Release `.zip` file, but after a find-replace
operation we forgot to double check the replaced strings.

Author: lifehackerhansol

docs/installing-boot9strap-(mset9-play-store).md

@@ -38,7 +38,7 @@ In this section, you will prepare the SD card data necessary for the MSET9 explo
 1. Copy everything from the MSET9 `.zip` to the root of your SD card, overwriting any existing files:
     + Open ZArchiver
     + If prompted, [allow ZArchiver to access files on your SD card](/images/screenshots/mset9/zarchiver-allow.png)
-    + Navigate to where the downloaded MSET9 MSET9 `.zip` is located ([likely in the Downloads folder](/images/screenshots/mset9/zarchiver-zip-location.png))
+    + Navigate to where the downloaded MSET9 `.zip` is located ([likely in the Downloads folder](/images/screenshots/mset9/zarchiver-zip-location.png))
     + Select the MSET9 `.zip`, then select "Extract..." ([image](/images/screenshots/mset9/zarchiver-extract-1.png))
     + Navigate to your SD card, then tap the blue 'down arrow' icon to extract the files to the root of your SD card ([image](/images/screenshots/mset9/zarchiver-extract-2.png))