如何使用bash脚本（sed，awk..etc）取消注释hocon文件中包含特定文本的特定行的注释

我有一个hocon文件，其中包含以下文本，我要取消注释其中包含CPU的行

   // Size of buffer for events waiting to be processed by the fetcher. Typically, this should       
    // be at least 3-4x  number of cores to ensure that the processing pipeline is making use of       
    // all available CPUs and it is always running       maxFetcherBufferSize: 100