Update lastest guidance

Signed-off-by: Tran Ngoc Nhan <ngocnhan.tran1996@gmail.com>

Author: ngocnhan-tran1996

CONTRIBUTING.adoc

@@ -81,8 +81,8 @@ The wiki pages https://github.com/spring-projects/spring-framework/wiki/Code-Sty
 
 To format the code as well as check the style, run `./gradlew format && ./gradlew check`.
 
-NOTE: _Since the Stream API is https://github.com/spring-projects/spring-security/issues/7154[much slower] than `for` loop, please use it judiciously.
-The team may ask you to change it to a `for` loop if the given code is along a hot path._
+NOTE: Since the Stream API is https://github.com/spring-projects/spring-security/issues/7154[much slower] than `for` loop, please use it judiciously.
+The team may ask you to change it to a `for` loop if the given code is along a hot path.
 
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