Apply suggestions from code review

Co-authored-by: Chris Smowton <smowton@github.com>

Author: aschackmull

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

@@ -7,7 +7,7 @@ private import internal.FlowSummaryImpl as Impl
 private import internal.DataFlowDispatch
 private import internal.DataFlowPrivate
 
-// import all instances below
+// import all instances of SummarizedCallable below
 private module Summaries {
   private import semmle.code.java.dataflow.ExternalFlow
 }

java/ql/src/semmle/code/java/dataflow/internal/DataFlowUtil.qll

@@ -156,7 +156,7 @@ predicate simpleLocalFlowStep(Node node1, Node node2) {
   // to B as well. As an example, this simplifies modeling of fluent methods:
   // for `StringBuilder.append(x)` with a specified value flow from qualifier to
   // return value and taint flow from argument 0 to the qualifier, then this
-  // allows the inferral of taint flow from argument 0 to the return value.
+  // allows us to infer taint flow from argument 0 to the return value.
   node1.(SummaryNode).(PostUpdateNode).getPreUpdateNode().(ParameterNode) = node2
 }