Change LogFactory and ScriptEngine to use html instead of HTML for even more consistency

src/engine/logfactory.cpp

@@ -39,7 +39,7 @@ namespace {
     const std::string keyCategoryStamping = "CategoryStamping";
     const std::string keyLogLevelStamping = "LogLevelStamping";
 
-    const std::string valueHtmlLog = "HTML";
+    const std::string valueHtmlLog = "html";
     const std::string valueTextLog = "Text";
 }
 

src/scripting/scriptengine.cpp

@@ -561,7 +561,7 @@ void ScriptEngine::writeDocumentation(const std::string& filename, const std::st
             }
         }
     }
-    else if (type == "HTML") {
+    else if (type == "html") {
         std::ofstream file;
         file.exceptions(~std::ofstream::goodbit);
         file.open(filename);