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docs (README.md): fix typo in JavaScript name #317

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The mission of DelphinusLab is to provide Web2 developers with a concise toolset to leverage the power of Web3 in their applications. The ZKWASM (ZKSNARK virtual machine that supports Web Assembly) serves as a trustless layer between rich applications running on WASM runtime and smart contracts on chain.

WASM (or WebAssembly) is an open standard binary code format similar to assembly. Its initial objective was to provide an alternative to java-script with improved performance for the current web ecosystem. Benefiting from its platform independence, front-end flexibility (can be compiled from the majority of languages including C, C++, assembly script, rust, etc.), good isolated runtime and speed comes closer to the speed of a native binary, its usage is arising in distributed cloud and edge computing. Recently it has become a popular binary format for users to run customized functions on AWS Lambda, Open Yurt, AZURE, etc.
WASM (or WebAssembly) is an open standard binary code format similar to assembly. Its initial objective was to provide an alternative to JavaScript with improved performance for the current web ecosystem. Benefiting from its platform independence, front-end flexibility (can be compiled from the majority of languages including C, C++, assembly script, rust, etc.), good isolated runtime and speed comes closer to the speed of a native binary, its usage is arising in distributed cloud and edge computing. Recently it has become a popular binary format for users to run customized functions on AWS Lambda, Open Yurt, AZURE, etc.

The idea of ZKWASM is derived from ZKSNARK (Zero-Knowledge Succinct Non-Interactive Argument of Knowledge) which is a combination of SNARG (Succinct non-interactive arguments) and zero-knowledge proof. In general, the adoption of ZKSNARK usually requires implementing a program in arithmetic circuits or circuit-friendly languages (Pinocchio, TinyRAM, Buffet/Pequin, Geppetto, xJsnark framework, ZoKrates) that forms a barrier for existing programs to leverage its power. An alternative approach is, instead of applying ZKSNARK on the source code, applying it on the bytecode level of a virtual machine and implementing a zksnark-backed virtual machine. In this work, we take the approach of writing the whole WASM virtual machine in ZKSNARK circuits so that existing WASM applications can benefit from ZKSNARK by simply running on the ZKWASM, without any modification. Therefore, the cloud service provider can prove to any user that the computation result is computed honestly and no private information is leaked.

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