TODO: Clarify comment

Author: jwilk

data/c.ini

@@ -195,7 +195,7 @@ command = splint -I{cwd} -strict +quiet {files}
 # TODO: https://divine.fi.muni.cz/
 # TODO: https://www.spinroot.com/static/
 # TODO: https://github.com/sosy-lab/cpachecker/
-# TODO: shell metacharacter injection: system popen
+# TODO: shell metacharacter injection: system(3), popen(3)
 # TODO: astyle
 # TODO: uncrustify
 # TODO: clang-format