Fix error anatomy demo copy

Author: grega

docs/anatomy.html

@@ -25,8 +25,8 @@ <h1>Anatomy of a Friendly Error Message</h1>
           <div class="anatomy__context-code">
             <div>Traceback (most recent call last):</div>
             <div>&nbsp;&nbsp;File "main.py", line 2, in &lt;module&gt;</div>
-            <div>&nbsp;&nbsp;&nbsp;&nbsp;print("Hello, " + nme)</div>
-            <div>NameError: name 'nme' is not defined</div>
+            <div>&nbsp;&nbsp;&nbsp;&nbsp;print("Hello, " + firstname)</div>
+            <div>NameError: name 'firstname' is not defined</div>
           </div>
         </div>
 
@@ -40,8 +40,9 @@ <h1>Anatomy of a Friendly Error Message</h1>
             </div>
             <div class="anatomy__zone-body">
               <div class="pfem__title">This variable doesn't exist yet</div>
-              <div class="pfem__summary">Your code uses the variable "<em>nme</em>", but it hasn't been created yet.
-                Check line 2. If you meant to print the text <em>nme</em>, put it in double quotes.</div>
+              <div class="pfem__summary">Your code uses the variable "<em>firstname</em>", but it hasn't been created
+                yet.
+                Check line 2. If you meant to print the text <em>firstname</em>, put it in double quotes.</div>
             </div>
           </div>
 
@@ -52,7 +53,8 @@ <h1>Anatomy of a Friendly Error Message</h1>
               <div class="anatomy__zone-tag">Hint &amp; Direct - Why it happened</div>
             </div>
             <div class="anatomy__zone-body">
-              <div class="pfem__why">Without speech marks Python treats <em>nme</em> as a variable, and this variable
+              <div class="pfem__why">Without speech marks Python treats <em>firstname</em> as a variable, and this
+                variable
                 does not exist yet.</div>
             </div>
           </div>
@@ -65,8 +67,8 @@ <h1>Anatomy of a Friendly Error Message</h1>
             </div>
             <div class="anatomy__zone-body">
               <ul class="pfem__steps">
-                <li>If it is meant to be text, put speech marks around <em>nme</em>.</li>
-                <li>If it is meant to be a variable, make it first (for example: <code>nme = 0</code>).</li>
+                <li>If it is meant to be text, put speech marks around <em>firstname</em>.</li>
+                <li>If it is meant to be a variable, make it first (for example: <code>firstname = "Jo"</code>).</li>
                 <li>Check spelling and capital letters.</li>
               </ul>
             </div>
@@ -79,8 +81,8 @@ <h1>Anatomy of a Friendly Error Message</h1>
               <div class="anatomy__zone-tag">Solve - Suggested fix</div>
             </div>
             <div class="anatomy__zone-body">
-              <pre class="pfem__patch">nme = 0
-print("Hello, " + nme)</pre>
+              <pre class="pfem__patch">firstname = "Jo"
+print("Hello, " + firstname)</pre>
             </div>
           </div>