Fix error logging as "error" not "eror

[alex067]

System information

Geth version: geth version
CL client & version: e.g. lighthouse/nimbus/prysm@v1.0.0
OS & Version: Windows/Linux/OSX
Commit hash : (if develop)

Expected behaviour

When parsing through logs for errors, there is an inconsistency between the log level vs. standards. See: https://github.com/ethereum/go-ethereum/blob/master/log/logger.go

	case slog.LevelError:
		return "eror"

Actual behaviour

The expected behavior is log levels follow standard levels and errors be logged as "error" as opposed to "eror." For example, the LevelAlignedString properly assigns slog.LevelError as ERROR however LevelString is assigning it as eror

Steps to reproduce the behaviour

Backtrace

[backtrace]

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[rjl493456442]

@jwasinger Is it a typo? Please take a look.