Fix demo code in README.md (#336) · Thalhammer/jwt-cpp@bd682ed

Original file line number	Diff line number	Diff line change
`@@ -76,8 +76,8 @@ In order to verify a token you first build a verifier and use it to verify a dec`
`76`	`76`	```cpp
`77`	`77`	`auto verifier = jwt::verify()`
`78`	`78`	`.with_issuer("auth0")`
`79`		`- .with_claim("sample", jwt::claim(std::string("test")));`
`80`		`- .allow_algorithm(jwt::algorithm::hs256{"secret"})`
	`79`	`+ .with_claim("sample", jwt::claim(std::string("test")))`
	`80`	`+ .allow_algorithm(jwt::algorithm::hs256{"secret"});`
`81`	`81`
`82`	`82`	`verifier.verify(decoded_token);`
`83`	`83`	```