Update Epub.cpp

Author: Palloxin

shared/Epub.cpp

@@ -220,7 +220,7 @@ void clean_summary(std::string &summary)
     std::regex regx76("…");
     summary = std::regex_replace(summary, regx76, "…");
     std::regex regx77(""");
-    summary = std::regex_replace(summary, regx77, '"');
+    summary = std::regex_replace(summary, regx77, "\"");
     std::regex regx78("±");
     summary = std::regex_replace(summary, regx78, "±");
     std::regex regx79("«");