Remove escape characters (#565)

Fixes #564

Author: BillWagner

standard/expressions.md

@@ -150,9 +150,9 @@ The precedence of an operator is established by the definition of its associated
 > |  [§11.11](expressions.md#1111-relational-and-type-testing-operators)             | Equality                         | `==` `!=`
 > |  [§11.12](expressions.md#1112-logical-operators)             | Logical AND                      | `&`
 > |  [§11.12](expressions.md#1112-logical-operators)             | Logical XOR                      | `^`
-> |  [§11.12](expressions.md#1112-logical-operators)             | Logical OR                       | `\|`
+> |  [§11.12](expressions.md#1112-logical-operators)             | Logical OR                       | `|`
 > |  [§11.13](expressions.md#1113-conditional-logical-operators)             | Conditional AND                  | `&&`
-> |  [§11.13](expressions.md#1113-conditional-logical-operators)             | Conditional OR                   | `\|\|`
+> |  [§11.13](expressions.md#1113-conditional-logical-operators)             | Conditional OR                   | `||`
 > |  [§11.14](expressions.md#1114-the-null-coalescing-operator)             | Null coalescing                  | `??`
 > |  [§11.15](expressions.md#1115-conditional-operator)             | Conditional                      | `?:`
 > |  [§11.18](expressions.md#1118-assignment-operators) and [§11.16](expressions.md#1116-anonymous-function-expressions)  | Assignment and lambda expression | `=` `*=` `/=` `%=` `+=` `-=` `<<=` `>>=` `&=` `^=` `\|=` `=>`