titltes on tutorial

Author: willmcgugan

docs/tutorial.md

@@ -25,7 +25,7 @@ This will be a simple yet **fully featured** app — you could distribute th
 Here's what the finished app will look like:
 
 
-```{.textual path="docs/examples/tutorial/stopwatch.py" press="tab,enter,tab,enter,tab,enter,tab,enter"}
+```{.textual path="docs/examples/tutorial/stopwatch.py" title="stopwatch.py" press="tab,enter,tab,enter,tab,enter,tab,enter"}
 ```
 
 ### Get the code
@@ -90,12 +90,12 @@ The first step in building a Textual app is to import and extend the `App` class
 If you run this code, you should see something like the following:
 
 
-```{.textual path="docs/examples/tutorial/stopwatch01.py"}
+```{.textual path="docs/examples/tutorial/stopwatch01.py" title="stopwatch01.py"}
 ```
 
 Hit the ++d++ key to toggle between light and dark mode.
 
-```{.textual path="docs/examples/tutorial/stopwatch01.py" press="d" title="StopwatchApp + dark"}
+```{.textual path="docs/examples/tutorial/stopwatch01.py" press="d" title="stopwatch01.py"}
 ```
 
 Hit ++ctrl+c++ to exit the app and return to the command prompt.
@@ -449,7 +449,7 @@ The `action_remove_stopwatch` function calls [query()][textual.dom.DOMNode.query
 
 If you run `stopwatch.py` now you can add a new stopwatch with the ++a++ key and remove a stopwatch with ++r++.
 
-```{.textual path="docs/examples/tutorial/stopwatch.py" press="d,a,a,a,a,a,a,a,tab,enter,tab"}
+```{.textual path="docs/examples/tutorial/stopwatch.py" title="stopwatch.py" press="d,a,a,a,a,a,a,a,tab,enter,tab"}
 ```
 
 ## What next?