appveyor.yml: Fix syntax.
diff --git a/appveyor.yml b/appveyor.yml
index 53b4516..d4bcaff 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,8 +5,8 @@ version: '{branch}-{build}'
before_build:
- 'cmake --version'
- - 'if "%PLATFORM%"=="x64" cmake -G "Visual Studio 12 Win64"' .
- - 'if not "%PLATFORM%"=="x64" cmake -G "Visual Studio 12"' .
+ - 'if "%PLATFORM%"=="x64" cmake -G "Visual Studio 12 Win64" .'
+ - 'if not "%PLATFORM%"=="x64" cmake -G "Visual Studio 12" .'
build:
project: md4c.sln