Title tweak in release notes

Author: garydgregory

RELEASE-NOTES.txt

@@ -1,4 +1,4 @@
-Apache Commons Codec 1.18.0 RELEASE NOTES
+Apache Commons Codec 1.18.0 Release Notes
 -----------------------------------------
 
 The Apache Commons Codec team is pleased to announce the release of Apache Commons Codec 1.18.0. 
@@ -33,7 +33,7 @@ Download page: https://commons.apache.org/proper/commons-codec/download_codec.cg
 
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-Apache Commons Codec 1.17.2 RELEASE NOTES
+Apache Commons Codec 1.17.2 Release Notes
 -----------------------------------------
 
 The Apache Commons Codec component contains encoders and decoders for
@@ -70,7 +70,7 @@ Download page: https://commons.apache.org/proper/commons-codec/download_codec.cg
 
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-Apache Commons Codec 1.17.1 RELEASE NOTES
+Apache Commons Codec 1.17.1 Release Notes
 -----------------------------------------
 
 The Apache Commons Codec component contains encoders and decoders for
@@ -103,7 +103,7 @@ Download page: https://commons.apache.org/proper/commons-codec/download_codec.cg
 
 ---------------------------------------------------------------------------------
 
-Apache Commons Codec 1.17.0 RELEASE NOTES
+Apache Commons Codec 1.17.0 Release Notes
 -----------------------------------------
 
 The Apache Commons Codec component contains encoders and decoders for
@@ -151,7 +151,7 @@ Download page: https://commons.apache.org/proper/commons-codec/download_codec.cg
 
 ---------------------------------------------------------------------------------
 
-Apache Commons Codec 1.16.1 RELEASE NOTES
+Apache Commons Codec 1.16.1 Release Notes
 -----------------------------------------
 
 The Apache Commons Codec component contains encoders and decoders for