Apply code review findings

Author: tamasvajk

java/ql/lib/semmle/code/java/frameworks/kotlin/Serialization.qll

@@ -1,5 +1,5 @@
 /**
- * Provides classes and predicates for working with thi `kotlinx.serialization` plugin.
+ * Provides classes and predicates for working with the `kotlinx.serialization` plugin.
  */
 
 import java

java/ql/src/Likely Bugs/Arithmetic/ConstantExpAppearsNonConstant.ql

@@ -10,7 +10,7 @@
  */
 
 import java
-private import semmle.code.java.frameworks.kotlin.Serialization
+import semmle.code.java.frameworks.kotlin.Serialization
 
 int eval(Expr e) { result = e.(CompileTimeConstantExpr).getIntValue() }