Update some QLDoc comments

Author: asgerf

python/ql/lib/semmle/python/dataflow/new/internal/TypeTracker.qll

@@ -185,7 +185,7 @@ module StepSummary {
   }
 
   /**
-   * Holds if `nodeFrom` is being written to the `content` content of the object in `nodeTo`.
+   * Holds if `nodeFrom` is being written to the `contents` of the object in `nodeTo`.
    *
    * Note that `nodeTo` will always be a local source node that flows to the place where the content
    * is written in `basicStoreStep`. This may lead to the flow of information going "back in time"
@@ -204,7 +204,7 @@ module StepSummary {
    * def bar(x):
    *    z = x.attr
    * ```
-   * for the attribute write `x.attr = y`, we will have `content` being the literal string `"attr"`,
+   * for the attribute write `x.attr = y`, we will have `contents` being the literal string `"attr"`,
    * `nodeFrom` will be `y`, and `nodeTo` will be the object `Foo()` created on the first line of the
    * function. This means we will track the fact that `x.attr` can have the type of `y` into the
    * assignment to `z` inside `bar`, even though this attribute write happens _after_ `bar` is called.

ruby/ql/lib/codeql/ruby/typetracking/TypeTracker.qll

@@ -185,7 +185,7 @@ module StepSummary {
   }
 
   /**
-   * Holds if `nodeFrom` is being written to the `content` content of the object in `nodeTo`.
+   * Holds if `nodeFrom` is being written to the `contents` of the object in `nodeTo`.
    *
    * Note that `nodeTo` will always be a local source node that flows to the place where the content
    * is written in `basicStoreStep`. This may lead to the flow of information going "back in time"
@@ -204,7 +204,7 @@ module StepSummary {
    * def bar(x):
    *    z = x.attr
    * ```
-   * for the attribute write `x.attr = y`, we will have `content` being the literal string `"attr"`,
+   * for the attribute write `x.attr = y`, we will have `contents` being the literal string `"attr"`,
    * `nodeFrom` will be `y`, and `nodeTo` will be the object `Foo()` created on the first line of the
    * function. This means we will track the fact that `x.attr` can have the type of `y` into the
    * assignment to `z` inside `bar`, even though this attribute write happens _after_ `bar` is called.

ruby/ql/lib/codeql/ruby/typetracking/TypeTrackerSpecific.qll

@@ -122,11 +122,11 @@ predicate returnStep(Node nodeFrom, Node nodeTo) {
 }
 
 /**
- * Holds if `nodeFrom` is being written to the `content` content of the object
+ * Holds if `nodeFrom` is being written to the `contents` of the object
  * in `nodeTo`.
  *
  * Note that the choice of `nodeTo` does not have to make sense
- * "chronologically". All we care about is whether the `content` content of
+ * "chronologically". All we care about is whether the `contents` of
  * `nodeTo` can have a specific type, and the assumption is that if a specific
  * type appears here, then any access of that particular content can yield
  * something of that particular type.
@@ -145,7 +145,7 @@ predicate returnStep(Node nodeFrom, Node nodeTo) {
  *    z = x.content
  * end
  * ```
- * for the content write `x.content = y`, we will have `content` being the
+ * for the content write `x.content = y`, we will have `contents` being the
  * literal string `"content"`, `nodeFrom` will be `y`, and `nodeTo` will be the
  * `Foo` object created on the first line of the function. This means we will
  * track the fact that `x.content` can have the type of `y` into the assignment