Fix mismatch of name for KF min version variable

Fixup for 8440ab79

CMakeLists.txt

@@ -11,7 +11,7 @@ project(ksquares VERSION "0.6.${RELEASE_SERVICE_COMPACT_VERSION}")
 set (QT_MIN_VERSION "5.15.2")
 set (KF_MIN_VERSION "5.90.0")
 
-find_package(ECM ${KF5_MIN_VERSION} REQUIRED CONFIG)
+find_package(ECM ${KF_MIN_VERSION} REQUIRED CONFIG)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${ECM_MODULE_PATH} )
 
 include(KDEInstallDirs)
@@ -26,7 +26,7 @@ include(FeatureSummary)
 
 find_package(Qt${QT_MAJOR_VERSION} ${QT_MIN_VERSION} REQUIRED NO_MODULE COMPONENTS Widgets)
 
-find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
+find_package(KF5 ${KF_MIN_VERSION} REQUIRED COMPONENTS
     Config
     ConfigWidgets
     CoreAddons
@@ -36,7 +36,7 @@ find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
     WidgetsAddons
     XmlGui
 )
-find_package(KF5DocTools ${KF5_MIN_VERSION})
+find_package(KF5DocTools ${KF_MIN_VERSION})
 set_package_properties(KF5DocTools PROPERTIES DESCRIPTION
     "Tools to generate documentation"
     TYPE OPTIONAL