GH-1401 - Fix typo in reference documentation.

There was a tiny typo in ["Verifying Application Module Structure" docs](https://docs.spring.io/spring-modulith/reference/verification.html).

Signed-off-by: Cristopher <115337506+kitt51@users.noreply.github.com>

Author: kitt51

src/docs/antora/modules/ROOT/pages/verification.adoc

@@ -44,7 +44,7 @@ ApplicationModules.of(…)
   .throwIfPresent();
 ----
 
-== Customizing the Verifcation
+== Customizing the Verification
 
 As described xref:verification.adoc#verification[above], by default, both the `ApplicationModules.verify(…)` and `….detectViolations(…)` automatically perform additional verifications depending on the classpath configuration.