chore: fix the readme item numbering

README.md

@@ -50,23 +50,23 @@ and the graphical interface usage description available [here](https://alchemist
 try to solve the following exercises:
 
 1. Add two nodes to an empty, continuous environment, and make them connected
-1. Create 10000 nodes randomly displaced inside a circle centered in (0,0) and radius 10
-1. Create a grid of nodes from (-5,-5) to (5,5), with nodes every (0.25,0.25) distance units, and no perturbance
-1. Create a perturbed grid from the example above
-1. Put some {token} LSAs in some nodes of the system
-1. Write a "dodgeball" program
-1. See how YAML can be used to write personalised sections and how they can be referred
-1. Modify the dodgeball program so that it *counts* in the LSA the number of passes
-1. Write an LSA diffusion program: after some time, every node of the network must have the {token} LSA. Use the `*` operator
-1. Look at the `10-math.yml` file. Esperiment with it and try to move nodes around manually.
-1. Write a gradient, it should:
-    1. convert a `{source}` to a `{gradient, 0}` (don't delete the source!)
-    1. diffuse to neighbors the gradient, whose value is increased of `#D`
-    1. if there are multiple copies of the gradient, keep only the lowest (immediately!)
-    1. every some time "age" the information by increasing its value
-    1. delete gradients whose value is higher than some threshold (e.g. 20).
-1. Take a look to `12-sets.yml`, and see how the set arithmetic works. Run it, and see the result.
-1. Modify the program above by changing the time distribution, using a personalised one: a DiracComb with parameter 0.5
-1. Take a look to `14-yaml.vars.yml`, and make sure to understand how the variables system works
-1. Take a look to `15-move.yml`, run it and play with its variables
-1. Try to run `16-maps.yml` (note: it can take some time on the first load). Get a glance of the possible complexity of advanced scenarios. Discuss the result, modify the example as you like.
+2. Create 10000 nodes randomly displaced inside a circle centered in (0,0) and radius 10
+3. Create a grid of nodes from (-5,-5) to (5,5), with nodes every (0.25,0.25) distance units, and no perturbance
+4. Create a perturbed grid from the example above
+5. Put some {token} LSAs in some nodes of the system
+6. Write a "dodgeball" program
+7. See how YAML can be used to write personalised sections and how they can be referred
+8. Modify the dodgeball program so that it *counts* in the LSA the number of passes
+9. Write an LSA diffusion program: after some time, every node of the network must have the {token} LSA. Use the `*` operator
+10. Look at the `10-math.yml` file. Esperiment with it and try to move nodes around manually.
+11. Write a gradient, it should:
+     1. convert a `{source}` to a `{gradient, 0}` (don't delete the source!)
+     2. diffuse to neighbors the gradient, whose value is increased of `#D`
+     3. if there are multiple copies of the gradient, keep only the lowest (immediately!)
+     4. every some time "age" the information by increasing its value
+     5. delete gradients whose value is higher than some threshold (e.g. 20).
+12. Take a look to `12-sets.yml`, and see how the set arithmetic works. Run it, and see the result.
+13. Modify the program above by changing the time distribution, using a personalised one: a DiracComb with parameter 0.5
+14. Take a look to `14-yaml.vars.yml`, and make sure to understand how the variables system works
+15. Take a look to `15-move.yml`, run it and play with its variables
+16. Try to run `16-maps.yml` (note: it can take some time on the first load). Get a glance of the possible complexity of advanced scenarios. Discuss the result, modify the example as you like.