Update annotations.tex

Add here as the general description.

chapters/annotations.tex

@@ -2329,6 +2329,7 @@ \section{License Texts}\label{license-texts}
 For a top-level class the {\lstinline!annotation(License="modelica:/ModelicaLibraryName/Resources/Licenses/MyLicense.txt")!}\annotationindex{License}, gives a license file for the class.
 The annotation may give a scalar value or an array of values.
 The license files are human-readable files containing the license conditions.
+If the annotation specifies an array of license files the conditions in all of them must be satisfied (i.e., it is not intended for dual-licensing).
 External functions may also contain this annotation (with similar content), see \cref{annotations-for-external-libraries-and-include-files}.
 When generating a distributable version for a translated model the license files for used functions and top-level classes should be included.