fix documentation warnings and broken links

gcontini

2020-11-29 ecd2f38f3d9c8b28aaa4c47bc09789f11dcaa7f7

 src/library/base/CMakeLists.txt

@@ -1,7 +1,7 @@
ADD_LIBRARY(base OBJECT
    EventRegistry.cpp
    StringUtils.cpp
    file_utils.cpp
    string_utils.cpp
    base64.cpp
    logger.cpp
)