🐛 Fix: ctx.BodyParser was not able to parse vendor specific content type

[shirshendubhowmick]

Please provide enough information so that others can review your pull request:

ctx.BodyParser was not able to parse vendor specific content types like application/vnd.api+json; version=1 even though its a valid type of JSON

Explain the details for making this change. What existing problem does the pull request solve?

This solves #1505

Benchmark details related to this change

Running tool: /usr/local/go/bin/go test -benchmem -run=^$ -bench ^(Benchmark_ParseVendorSpecificContentType)$ github.com/gofiber/fiber/v2/utils

goos: darwin
goarch: amd64
pkg: github.com/gofiber/fiber/v2/utils
cpu: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
Benchmark_ParseVendorSpecificContentType/vendorContentType-12         	23002122	        52.34 ns/op	      16 B/op	       1 allocs/op
Benchmark_ParseVendorSpecificContentType/defaultContentType-12        	175375113	         6.869 ns/op	       0 B/op	       0 allocs/op
PASS
ok  	github.com/gofiber/fiber/v2/utils	4.599s

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[ReneWerner87]

Looks good, could you please add a benchmark?

[shirshendubhowmick]

Looks good, could you please add a benchmark?

@ReneWerner87 Done.

[ReneWerner87]

Can you please post the output of the benchmark in the pull request so we can see what the values are and have them noted for later here

[shirshendubhowmick]

Can you please post the output of the benchmark in the pull request so we can see what the values are and have them noted for later here

Yeah sure, I have edited the PR description and added the benchmark details. Also there was a typo in the benchmark name, have fixed it.

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