Update remaining tables to Bootstrap tables in docs by adding .table class

site/content/docs/4.3/components/alerts.md

@@ -107,7 +107,7 @@ var bsAlert = new bootstrap.Alert(myAlert)
 
 This makes an alert listen for click events on descendant elements which have the `data-dismiss="alert"` attribute. (Not necessary when using the data-api's auto-initialization.)
 
-<table>
+<table class="table">
   <thead>
     <tr>
       <th>Method</th>
@@ -152,7 +152,7 @@ alert.close()
 
 Bootstrap's alert plugin exposes a few events for hooking into alert functionality.
 
-<table>
+<table class="table">
   <thead>
     <tr>
       <th>Event</th>

site/content/docs/4.3/components/buttons.md

@@ -159,7 +159,7 @@ var button = document.getElementById('myButton')
 var bsButton = new bootstrap.Button(button)
 {{< /highlight >}}
 
-<table>
+<table class="table">
   <thead>
     <tr>
       <th>Method</th>

site/content/docs/4.3/components/dropdowns.md

@@ -862,7 +862,7 @@ Note when `boundary` is set to any value other than `'scrollParent'`, the style
 
 ### Methods
 
-<table>
+<table class="table">
   <thead>
     <tr>
       <th>Method</th>
@@ -914,7 +914,7 @@ Note when `boundary` is set to any value other than `'scrollParent'`, the style
 All dropdown events are fired at the `.dropdown-menu`'s parent element and have a `relatedTarget` property, whose value is the toggling anchor element.
 `hide.bs.dropdown` and `hidden.bs.dropdown` events have a `clickEvent` property (only when the original Event type is `click`) that contains an Event Object for the click event.
 
-<table>
+<table class="table">
   <thead>
     <tr>
       <th>Method</th>