Fix Mermaid syntax

gitname · gitname · commit 7f0109820792 · 2022-07-28T20:13:54.000-07:00
diff --git a/README.md b/README.md
@@ -7,7 +7,7 @@
 # Workflow
 
 ```mermaid
-flowchart UD
+flowchart TB
 
     subgraph d [dupeGuru]
       d1[Perform filename or contents scan]-->d2[Export results as CSV file]
