Apply suggestions from code review

Co-authored-by: Taus <tausbn@github.com>

Author: yoff

python/ql/src/semmle/python/dataflow/new/internal/DataFlowPublic.qll

@@ -141,7 +141,7 @@ class Node extends TNode {
   LocalSourceNode getALocalSource() { result.flowsTo(this) }
 
   /**
-   * Gets a local source node from which data may flow to this node in zero or more local steps.
+   * Gets a local source node from which data may flow to this node in zero or more local taint-flow steps.
    */
   LocalSourceNode getALocalTaintSource() { result.taintFlowsTo(this) }
 }

python/ql/src/semmle/python/dataflow/new/internal/LocalSources.qll

@@ -71,7 +71,7 @@ private module Cached {
    */
   cached
   predicate hasLocalSource(Node sink, Node source) {
-    // Declaring `source` to be a `SourceNode` currently causes a redundant check in the
+    // Declaring `source` to be a `LocalSourceNode` currently causes a redundant check in the
     // recursive case, so instead we check it explicitly here.
     source = sink and
     source instanceof LocalSourceNode
@@ -89,7 +89,7 @@ private module Cached {
    */
   cached
   predicate hasLocalTaintSource(Node sink, Node source) {
-    // Declaring `source` to be a `SourceNode` currently causes a redundant check in the
+    // Declaring `source` to be a `LocalSourceNode` currently causes a redundant check in the
     // recursive case, so instead we check it explicitly here.
     source = sink and
     source instanceof LocalSourceNode