Update README.md

Author: peldax

README.md

@@ -10,7 +10,7 @@ It is designed for PHP 7.4 because of its specific property spacing, which is no
 - Slevomat rules
     - [Slevomat coding-standard](https://github.com/slevomat/coding-standard)
     - Ruleset includes vast majority of Slevomat sniffs as they're great extension of PSR12 with wider scope and stricter requirements.
-- Custome rules
+- Custom rules
     - Package also introduces its own sniffs with more additional checks.
 
 ## Installation
@@ -280,4 +280,4 @@ Excluded sniffs:
 - SlevomatCodingStandard.Classes.ConstantSpacing
 - SlevomatCodingStandard.Commenting.RequireOneLineDocComment
 - SlevomatCodingStandard.Arrays.SingleLineArrayWhitespace
-- SlevomatCodingStandard.Operators.NegationOperatorSpacing
+- SlevomatCodingStandard.Operators.NegationOperatorSpacing