Update docs/csharp/misc/cs0077.md

Co-authored-by: Bartosz Klonowski <[email protected]>

Author: shethaadit

docs/csharp/misc/cs0077.md

@@ -14,7 +14,7 @@ The as operator must be used with a reference type or nullable type ('int' is a
 
  The [as](../language-reference/operators/type-testing-and-cast.md#as-operator) operator was passed a [value type](../language-reference/builtin-types/value-types.md). Because `as` can return [null](../language-reference/keywords/null.md), it can only be passed a [reference type](../language-reference/keywords/reference-types.md) or a [nullable value type](../language-reference/builtin-types/nullable-value-types.md).
 
-However, using [pattern matching](../fundamentals/functional/pattern-matching) with [is](../language-reference/operators/is) operator, we can directly perform type checking and assignments in one step.
+However, using [pattern matching](../fundamentals/functional/pattern-matching.md) with [is](../language-reference/operators/is.md) operator, we can directly perform type checking and assignments in one step.
 
  The following sample generates CS0077: