WiX: correct typo in Android SDK packaging

The product version variable was typoed. Due to the lack of packaging in
swift.org CI on PRs, this was not caught. Repair this for the nightly
builds.

Author: compnerd

platforms/Windows/sdk/drd/sdk.wxs

@@ -159,7 +159,7 @@
 
     <ComponentGroup Id="Testing">
       <Component Directory="Testing_usr_lib_swift_android_ARCH">
-        <File Source="$(PLATFORM_ROOT)\Developer\Library\Testing-$(ProductVerison)\usr\lib\swift\android\$(Architecture)\libTesting.so" />
+        <File Source="$(PLATFORM_ROOT)\Developer\Library\Testing-$(ProductVersion)\usr\lib\swift\android\$(Architecture)\libTesting.so" />
       </Component>
       <Component Directory="Testing.swiftmodule">
         <File Source="$(PLATFORM_ROOT)\Developer\Library\Testing-$(ProductVersion)\usr\lib\swift\android\Testing.swiftmodule\$(Triple).swiftdoc" />