Clarify arithmetic overflow behavior in expressions.rst

Author: rcseacord

src/coding-guidelines/expressions.rst

@@ -18,7 +18,7 @@ Expressions
     :tags: security, performance, numerics
 
     Eliminate `arithmetic overflow <https://rust-lang.github.io/fls/expressions.html#arithmetic-overflow>`_ of both signed and unsigned integer types. 
-    Arithmetic overflow panics in debug mode, but wrapsaround in release mode.
+    Arithmetic overflow will panic in debug mode, but wraparound in release mode.
     Any wraparound behavior must be explicitly specified to ensure the same behavior in both debug and release modes.
 
     This rule applies to the following primitive types: