Update the installer script

Author: cedx

Setup.iss

@@ -13,7 +13,7 @@ AppVersion = {#version}
 ArchitecturesAllowed = x64compatible
 ArchitecturesInstallIn64BitMode = x64compatible
 ChangesEnvironment = yes
-DefaultDirName = {autopf}\{#publisher}\PHP Minifier
+DefaultDirName = {autopf}\{#publisher}\PhpMinifier
 DisableProgramGroupPage = yes
 LicenseFile = License.md
 OutputBaseFilename = {#name} {#version}