Fix typos in the doc

Alex

Modules/FindFLEX.cmake

@@ -36,8 +36,8 @@
 #   find_package(BISON)
 #   find_package(FLEX)
 #
-#   BISON_TARGET(MyParser parser.y ${CMAKE_CURRENT_BINARY_DIR}/parser.cpp
-#   FLEX_TARGET(MyScanner lexer.l  ${CMAKE_CURRENT_BIANRY_DIR}/lexer.cpp)
+#   BISON_TARGET(MyParser parser.y ${CMAKE_CURRENT_BINARY_DIR}/parser.cpp)
+#   FLEX_TARGET(MyScanner lexer.l  ${CMAKE_CURRENT_BINARY_DIR}/lexer.cpp)
 #   ADD_FLEX_BISON_DEPENDENCY(MyScanner MyParser)
 #
 #   include_directories(${CMAKE_CURRENT_BINARY_DIR})