diff --git a/docs/notes/01_c-basic/02_xdx/assets/20.svg b/docs/notes/01_c-basic/02_xdx/assets/20.svg
index d0b4778..e70ac45 100644
--- a/docs/notes/01_c-basic/02_xdx/assets/20.svg
+++ b/docs/notes/01_c-basic/02_xdx/assets/20.svg
@@ -1,4 +1,4 @@
-
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+
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