improve

src/Inflector.php

@@ -566,7 +566,7 @@ public function toPascalCase(string $input): string
     /**
      * Returns a human-readable string.
      *
-     * @param string $input The string to humanize. It must be valid UTF-8 string.
+     * @param string $input The valid UTF-8 string to humanize.
      * @param bool $uppercaseWords Whether to set all words to uppercase or not.
      */
     public function toHumanReadable(string $input, bool $uppercaseWords = false): string
@@ -655,7 +655,7 @@ public function tableToClass(string $tableName): string
      * and removes the rest. You may customize characters map via $transliteration property
      * of the helper.
      *
-     * @param string $input An arbitrary string to convert. It must be valid UTF-8 string.
+     * @param string $input An arbitrary valid UTF-8 string to convert.
      * @param string $replacement The replacement to use for spaces. It must be valid UTF-8 string.
      * @param bool $lowercase whether to return the string in lowercase or not. Defaults to `true`.
      *

src/StringHelper.php

@@ -410,7 +410,7 @@ public static function uppercaseFirstCharacter(string $string, string $encoding
     /**
      * Uppercase the first character of each word in a string.
      *
-     * @param string $string The string to be processed. It must be valid UTF-8 string.
+     * @param string $string The valid UTF-8 string to be processed.
      * @param string $encoding The encoding to use, defaults to "UTF-8".
      *
      * @see https://php.net/manual/en/function.ucwords.php