Give all embedded live docs examples data-example-id attrs

Refs #11410

docs/_includes/components/progress-bars.html

@@ -10,7 +10,7 @@
 
   <h3 id="progress-basic">Basic example</h3>
   <p>Default progress bar.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-progress-bar">
     <div class="progress">
       <div class="progress-bar" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%;">
         <span class="sr-only">60% Complete</span>
@@ -27,7 +27,7 @@
 
   <h3 id="progress-label">With label</h3>
   <p>Remove the <code>.sr-only</code> class from within the progress bar to show a visible percentage. For low percentages, consider adding a <code>min-width</code> to ensure the label's text is fully visible.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="progress-bar-with-label">
     <div class="progress">
       <div class="progress-bar" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%;">
         60%
@@ -44,7 +44,7 @@
 
   <h3 id="progress-low-percentages">Low percentages</h3>
   <p>Progress bars representing low single digit percentages, as well as 0%, include a <code>min-width: 20px;</code> for legibility.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="progress-bar-at-low-percentage">
     <div class="progress">
       <div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100">
         0%
@@ -72,7 +72,7 @@
 
   <h3 id="progress-alternatives">Contextual alternatives</h3>
   <p>Progress bars use some of the same button and alert classes for consistent styles.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="contextual-progress-bar">
     <div class="progress">
       <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width: 40%">
         <span class="sr-only">40% Complete (success)</span>
@@ -119,7 +119,7 @@
 
   <h3 id="progress-striped">Striped</h3>
   <p>Uses a gradient to create a striped effect. Not available in IE8.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="striped-progress-bar">
     <div class="progress">
       <div class="progress-bar progress-bar-success progress-bar-striped" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width: 40%">
         <span class="sr-only">40% Complete (success)</span>
@@ -166,7 +166,7 @@
 
   <h3 id="progress-animated">Animated</h3>
   <p>Add <code>.active</code> to <code>.progress-bar-striped</code> to animate the stripes right to left. Not available in IE9 and below.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="animated-progress-bar">
     <div class="progress">
       <div class="progress-bar progress-bar-striped" role="progressbar" aria-valuenow="45" aria-valuemin="0" aria-valuemax="100" style="width: 45%"><span class="sr-only">45% Complete</span></div>
     </div>
@@ -182,7 +182,7 @@
 
   <h3 id="progress-stacked">Stacked</h3>
   <p>Place multiple bars into the same <code>.progress</code> to stack them.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="stacked-progress-bar">
     <div class="progress">
       <div class="progress-bar progress-bar-success" style="width: 35%">
         <span class="sr-only">35% Complete (success)</span>