Update find_package() documentation

cmake/qtermwidget5-config.cmake.in

@@ -1,28 +1,10 @@
-# - Find the QTermWidget include and library dirs and define a some macros
-#
-# The module defines the following variables
-#  QTERMWIDGET_FOUND         - Set to TRUE if all of the above has been found
-#
-#  QTERMWIDGET_INCLUDE_DIR   - The QTermWidget include directory
-#
-#  QTERMWIDGET_INCLUDE_DIRS  - The QTermWidget include directory
-#
-#  QTERMWIDGET_LIBRARIES     - The libraries needed to use QTermWidget
-#
-#  QTERMWIDGET_USE_FILE      - The variable QTERMWIDGET_USE_FILE is set which is the path
-#                              to a CMake file that can be included to compile qtermwidget
-#                              applications and libraries. It sets up the compilation
-#                              environment for include directories and populates a
-#                              QTERMWIDGET_LIBRARIES variable.
-#
-# QTERMWIDGET_QT_LIBRARIES   - The Qt libraries needed by QTermWidget
+# - Find the QTermWidget include and library
 #
 # Typical usage:
-#    find_package(QTERMWIDGET5)
+#    find_package(QTermWidget5 REQUIRED)
 #
-#    include(${QTERMWIDGET_USE_FILE})
 #    add_executable(foo main.cpp)
-#    target_link_libraries(foo ${QTERMWIDGET_QT_LIBRARIES} ${QTERMWIDGET_LIBRARIES})
+#    target_link_libraries(foo qtermwidget5)
 
 @PACKAGE_INIT@