ENH: caseInfo - use OF dictionary as default writeFormat

STYLE: checkMesh - removed writeChecks uppercase JSON option

applications/utilities/mesh/manipulation/checkMesh/writeMeshChecks.H

@@ -9,7 +9,6 @@ const Enum<writeChecksFormatType> writeChecksFormatTypeNames
     { writeChecksFormatType::none, "none" },
     { writeChecksFormatType::dictionary, "dictionary" },
     { writeChecksFormatType::JSON, "json" },
-    { writeChecksFormatType::JSON, "JSON" },
 };
 
 writeChecksFormatType writeChecksFormat(writeChecksFormatType::none);

src/functionObjects/utilities/caseInfo/caseInfo.C

@@ -416,7 +416,7 @@ bool Foam::functionObjects::caseInfo::read(const dictionary& dict)
 {
     if (stateFunctionObject::read(dict) && writeFile::read(dict))
     {
-        writeFormat_ = writeFormatNames_.get("writeFormat", dict);
+        writeFormatNames_.readIfPresent("writeFormat", dict, writeFormat_);
         lookupModeNames_.readIfPresent("lookupMode", dict, lookupMode_);
 
         dictionaries_ = dict.subOrEmptyDict("dictionaries");