Update the comment on the build rule. [ci skip]

Related to commit 8682ba781a48925899b4fe5fb31efb4b1a604f3f

Source/ThirdParty/Lua/CMakeLists.txt

@@ -29,7 +29,7 @@ define_source_files (GLOB_CPP_PATTERNS src/*.c GLOB_H_PATTERNS src/*.h EXCLUDE_P
 # Setup target
 setup_library ()
 
-# Install headers for building the Urho3D library
+# Install headers for building and using the Urho3D library (no direct dependencies but library user may need them)
 install_header_files (DIRECTORY src/ DESTINATION ${DEST_INCLUDE_DIR}/ThirdParty/Lua FILES_MATCHING PATTERN *.h)  # Note: the trailing slash is significant
 
 # Setup additional Lua standalone targets (these targets can be transfered and executed on an embedded device, such as Raspberry Pi and Android)

Source/ThirdParty/LuaJIT/CMakeLists.txt

@@ -400,7 +400,7 @@ set (INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR}/generated)
 # Setup target
 setup_library ()
 
-# Install headers for building the Urho3D library
+# Install headers for building and using the Urho3D library (no direct dependencies but library user may need them)
 install_header_files (DIRECTORY src/ DESTINATION ${DEST_INCLUDE_DIR}/ThirdParty/LuaJIT FILES_MATCHING PATTERN *.h *.hpp)  # Note: the trailing slash is significant
 
 # Setup additional Lua standalone target (this target can be transfered and executed on an embedded device, such as Raspberry Pi and Android)

Source/ThirdParty/toluapp/src/lib/CMakeLists.txt

@@ -32,5 +32,5 @@ set (INCLUDE_DIRS ../../include ../../../Lua${JIT}/src)
 # Setup target
 setup_library ()
 
-# Install headers for building the Urho3D library
+# Install headers for building and using the Urho3D library (no direct dependencies but library user may need them)
 install_header_files (DIRECTORY ../../include/ DESTINATION ${DEST_INCLUDE_DIR}/ThirdParty/toluapp FILES_MATCHING PATTERN *.h)  # Note: the trailing slash is significant