Format Other_Uppercase/Other_Lowercase property as an identifier in docs

libraries/stdlib/src/kotlin/text/Char.kt

@@ -299,7 +299,7 @@ public expect fun Char.isDigit(): Boolean
  * Returns `true` if this character is upper case.
  *
  * A character is considered to be an upper case character if its [category] is [CharCategory.UPPERCASE_LETTER],
- * or it has contributory property Other_Uppercase as defined by the Unicode Standard.
+ * or it has contributory property `Other_Uppercase` as defined by the Unicode Standard.
  *
  * @sample samples.text.Chars.isUpperCase
  */
@@ -310,7 +310,7 @@ public expect fun Char.isUpperCase(): Boolean
  * Returns `true` if this character is lower case.
  *
  * A character is considered to be a lower case character if its [category] is [CharCategory.LOWERCASE_LETTER],
- * or it has contributory property Other_Lowercase as defined by the Unicode Standard.
+ * or it has contributory property `Other_Lowercase` as defined by the Unicode Standard.
  *
  * @sample samples.text.Chars.isLowerCase
  */