change header style from h2 to h1 #120

Author: ziagham

README.md

@@ -1,5 +1,5 @@
 <div align="center">
-  <h2>FlowCtl</h2>
+  <h1>FlowCtl</h1>
   <p><i>Command-line tools for control FlowSynx</i></p>
 
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