Fix typo in monomorphic matcher documentation.

PiperOrigin-RevId: 886900324
Change-Id: I96832e8162b4631783cf0f2badf160d18d3256f8

docs/gmock_cook_book.md

diff --git a/docs/gmock_cook_book.md b/docs/gmock_cook_book.md
index b53cbd5..283a064 100644
--- a/docs/gmock_cook_book.md
+++ b/docs/gmock_cook_book.md
@@ -3591,7 +3591,7 @@
 bool matched = matcher.MatchAndExplain(value, maybe_os);
 // where `value` is of type `T` and
 // `maybe_os` is of type `std::ostream*`, where it can be null if the caller
-// is not interested in there textual explanation.
+// is not interested in the textual explanation.
 
 matcher.DescribeTo(os);
 matcher.DescribeNegationTo(os);