[libc] Fix documentation typo

GitOrigin-RevId: 392da6428dba1885b888654c7365198de73661ba
diff --git a/src/string/memory_utils/elements.h b/src/string/memory_utils/elements.h
index 63e30ba..119e819 100644
--- a/src/string/memory_utils/elements.h
+++ b/src/string/memory_utils/elements.h
@@ -24,12 +24,12 @@
 // higher order abstractions. Each function is defined twice: once with
 // fixed-size operations, and once with runtime-size operations.
 
-// Fixed-size copies from 'src' to 'dst'.
+// Fixed-size copy from 'src' to 'dst'.
 template <typename Element>
 void Copy(char *__restrict dst, const char *__restrict src) {
   Element::Copy(dst, src);
 }
-// Runtime-size copies from 'src' to 'dst'.
+// Runtime-size copy from 'src' to 'dst'.
 template <typename Element>
 void Copy(char *__restrict dst, const char *__restrict src, size_t size) {
   Element::Copy(dst, src, size);