Update README.md

Author: jkeresman01

README.md

@@ -1,7 +1,7 @@
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   <h1>sqln</h1>
-  <h5> SQL Schema Normalizer (3NF / BCNF)</h5>
+  <h4> SQL Schema Normalizer (3NF / BCNF)</h4>
   <h6> A command-line tool for automatic database normalization </h4>
 
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