Bring back !:

Author: trask

.github/config/.markdownlint-cli2.yaml

@@ -10,6 +10,8 @@ config:
     style: ordered
   no-inline-html: false
   fenced-code-language: false
+  no-trailing-punctuation:
+    punctuation: ".,;:" # allowing exclamation points and question marks at end of sentences
 
 ignores:
   - "**/build/**"

README.md

@@ -158,7 +158,7 @@ For more information about the approver role, see the [community repository](htt
 
 For more information about the emeritus role, see the [community repository](https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md#emeritus-maintainerapprovertriager).
 
-### Thanks to all of our contributors
+### Thanks to all of our contributors!
 
 <a href="https://github.com/open-telemetry/opentelemetry-java-instrumentation/graphs/contributors">
   <img alt="Repo contributors" src="https://contrib.rocks/image?repo=open-telemetry/opentelemetry-java-instrumentation" />