small fix to escape Markdown symbol in README.md

diff --git a/README.md b/README.md
index c0f4f2bc61429be35d0176ef456d26ac0365f235..d42528b7a3832517c14645412a6646770d548f1e 100644 (file)
--- a/README.md
+++ b/README.md
@@ -81,7 +81,7 @@ New feature of version 6.5.0
 * NEW: \O (true anychar)
 * NEW: if-then-else syntax   (?(...)...\|...)
 * NEW: Backreference validity checker (?(xxx)) (*original)
-* NEW: Absent repeater (?~absent)  [is equal to (?~|absent|\O*)]
+* NEW: Absent repeater (?~absent)  [is equal to (?~\|absent|\O*)]
 * NEW: Absent expression   (?~|absent|expr)  (*original)
 * NEW: Absent stopper (?~|absent)     (*original)