Fix typos in MeterPrimitive.md
Fix typos in MeterPrimitive.md
sugiuraii/PixiJS-Websocket-typescriptStudy,sugiuraii/WebSocketGaugeClientNeo,sugiuraii/WebSocketGaugeClientNeo,sugiuraii/PixiJS-Websocket-typescriptStudy,sugiuraii/WebSocketGaugeClientNeo,sugiuraii/PixiJS-Websocket-typescriptStudy