improve readability

Co-authored-by: Asger F <asgerf@github.com>

javascript/ql/src/Security/CWE-312/BuildArtifactLeak.ql

@@ -19,5 +19,5 @@ import DataFlow::PathGraph
 from Configuration cfg, DataFlow::PathNode source, DataFlow::PathNode sink
 where cfg.hasFlowPath(source, sink)
 select sink.getNode(), source, sink,
-  "Sensitive data returned by $@ is stored in build artifact here.", source.getNode(),
+  "Sensitive data returned by $@ is stored in a build artifact here.", source.getNode(),
   source.getNode().(CleartextLogging::Source).describe()

javascript/ql/src/semmle/javascript/Arrays.qll

@@ -40,7 +40,7 @@ module ArrayTaintTracking {
       succ = call
     )
     or
-    // `arary.reduce` with tainted value in callback
+    // `array.reduce` with tainted value in callback
     call.(DataFlow::MethodCallNode).getMethodName() = "reduce" and
     pred = call.getArgument(0).(DataFlow::FunctionNode).getAReturn() and // Require the argument to be a closure to avoid spurious call/return flow
     succ = call

javascript/ql/src/semmle/javascript/security/dataflow/CleartextLoggingCustomizations.qll

@@ -197,6 +197,8 @@ module CleartextLogging {
     )
     or
     // A property-copy step,
+    // dst[x] = src[x]
+    // dst[x] = JSON.stringify(src[x])
     exists(DataFlow::PropWrite write, DataFlow::PropRead read |
       read = write.getRhs()
       or