Apply suggestions from code review

Author: atorralba

java/ql/src/Security/CWE/CWE-347/MissingJWTSignatureCheck.ql

@@ -1,6 +1,6 @@
 /**
  * @name Missing JWT signature check
- * @description Failing to check the JWT signature may allow an attacker to forge their own tokens.
+ * @description Failing to check the Json Web Token (JWT) signature may allow an attacker to forge their own tokens.
  * @kind path-problem
  * @problem.severity error
  * @security-severity 7.8

java/ql/src/semmle/code/java/dataflow/ExternalFlow.qll

@@ -97,7 +97,6 @@ private module Frameworks {
   private import semmle.code.java.security.ResponseSplitting
   private import semmle.code.java.security.InformationLeak
   private import semmle.code.java.security.JexlInjectionSinkModels
-  private import semmle.code.java.security.JWT
   private import semmle.code.java.security.LdapInjection
   private import semmle.code.java.security.XPath
   private import semmle.code.java.frameworks.android.SQLite

java/ql/src/semmle/code/java/security/JWT.qll

@@ -1,4 +1,4 @@
-/** Provides classes for working with JWT libraries. */
+/** Provides classes for working with JSON Web Token (JWT) libraries. */
 
 import java
 private import semmle.code.java.dataflow.ExternalFlow

java/ql/src/semmle/code/java/security/MissingJWTSignatureCheckQuery.qll

@@ -1,8 +1,7 @@
-/** Provides classes to be used in queries related to JWT signature vulnerabilities. */
+/** Provides classes to be used in queries related to JSON Web Token (JWT) signature vulnerabilities. */
 
 import java
 import semmle.code.java.dataflow.DataFlow
-import semmle.code.java.dataflow.ExternalFlow
 import semmle.code.java.security.JWT
 
 /**