CMake: Fix off-by-one indentation
diff --git a/expat/CMakeLists.txt b/expat/CMakeLists.txt
index bdedfc1..b3ca160 100644
--- a/expat/CMakeLists.txt
+++ b/expat/CMakeLists.txt
@@ -297,7 +297,7 @@
         file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/doc)
         add_custom_command(TARGET expat PRE_BUILD COMMAND "${DOCBOOK_TO_MAN}" "${PROJECT_SOURCE_DIR}/doc/xmlwf.xml" && mv "XMLWF.1" "${PROJECT_BINARY_DIR}/doc/xmlwf.1")
         expat_install(FILES "${PROJECT_BINARY_DIR}/doc/xmlwf.1" DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)
-     endif()
+    endif()
 endif()
 
 #