Fix typo when converting originalHost toString (#1768)

Co-authored-by: $(git --no-pager log --format=format:'%an' -n 1) <$(git --no-pager log --format=format:'%ae' -n 1)>

zuul-core/src/main/java/com/netflix/zuul/message/http/HttpRequestMessageImpl.java

@@ -704,7 +704,7 @@ public String toString() {
                 + inboundRequest + ", parsedCookies="
                 + parsedCookies + ", reconstructedUri='"
                 + reconstructedUri + '\'' + ", pathAndQuery='"
-                + pathAndQuery + '\'' + "/ originalHost='"
+                + pathAndQuery + '\'' + ", originalHost='"
                 + originalHost + '\'' + ", infoForLogging='"
                 + infoForLogging + '\'' + '}';
     }