Update runtime files.
diff --git a/runtime/doc/usr_03.txt b/runtime/doc/usr_03.txt
index 6173260..8cbcf13 100644
--- a/runtime/doc/usr_03.txt
+++ b/runtime/doc/usr_03.txt
@@ -532,7 +532,7 @@
The . (dot) character matches any existing character. For example, the
pattern "c.m" matches a string whose first character is a c, whose second
-character is anything, and whose the third character is m. Example:
+character is anything, and whose third character is m. Example:
We use a computer that became the cummin winter. ~
xxx xxx xxx