Update EFFECT_ON_CONDITION.md

doc/EFFECT_ON_CONDITION.md

@@ -2977,7 +2977,7 @@ Store string from `set_string_var` in the variable object `target_var`
 | "target_var" | **mandatory** | [variable object](##variable-object) | variable, that accept the value; usually `context_val` | 
 | "parse_tags" | optional | boolean | Allo if parse [custom entries](NPCs.md#customizing-npc-speech) in string before storing | 
 | "i18n"       | optional | boolean | Whether the string values should be localized | 
-| "string_input" | optional | object | Accepts user input. When using `string_input`, the user will input a string and assign it to `target_var`. If the input is canceled, the value in `set_string_var` will be assigned as the default value. See details in the table below (the following properties are optional). |
+| "string_input" | optional | object | Accepts user input. When using `string_input`, the user will input a string and assign it to `target_var`. If the input is canceled, the value in `set_string_var` will be assigned as the default value. See details in the table below. |
 
 ##### String Input Details