dev: set config file location for lychee spell check

Author: practicalli-johnny

.github/config/megalinter.yaml

@@ -50,6 +50,7 @@ REPOSITORY_TRUFFLEHOG_DISABLE_ERRORS: true # Errors only as warnings
 
 # SPELL_CSPELL_DISABLE_ERRORS: true
 SPELL_MISSPELL_DISABLE_ERRORS: true
+SPELL_LYCHEE_CONFIG_FILE: ".github/config/lychee.toml"
 SPELL_LYCHEE_DISABLE_ERRORS: true # Errors are only warnings
 
 # YAML_PRETTIER_FILTER_REGEX_EXCLUDE: (docs/)