Update generated doc

Author: LukasWoodtli

docs/generators.md

@@ -12,6 +12,7 @@ The following generators are available:
 * [bash](generators/bash.md)  
 * [c](generators/c.md)  
 * [clojure](generators/clojure.md)  
+* [cpp-boost-beast-client](generators/cpp-boost-beast-client.md)  
 * [cpp-qt-client](generators/cpp-qt-client.md)  
 * [cpp-restsdk](generators/cpp-restsdk.md)  
 * [cpp-tiny (beta)](generators/cpp-tiny.md)