another occurance

Author: tshepang

src/expressions/if-expr.md

@@ -186,7 +186,7 @@ fn nested() {
 ```
 
 r[expr.if.chains.or]
-If any condition operand is a `let` pattern, then none of the condition operands can be a `||` [lazy boolean operator expression][expr.bool-logic] due to ambiguity and precedence with the `let` scrutinee. If a `||` expression is needed, then parentheses can be used. For example:
+If any condition operand is a `let` pattern, then none of the condition operands can be a `||` [lazy boolean operator expression][expr.bool-logic] due to ambiguity and precedence with the `let` scrutinee. If a `||` expression is needed, then parentheses must be used. For example:
 
 ```rust
 # let foo = Some(123);