docs: Small grammar fix in Automapping (#3659)

docs/manual/automapping.md

@@ -369,7 +369,7 @@ You can use Automapping to add various details to your maps. This small example
 | ![Grass detail tile in the first rule, Empty tile in the second.](images/automapping/automap_example23.png) | outputB\_Foreground |
 | ![Two Empty tiles.](images/automapping/automap_example24.png) | outputC\_Foreground |
 
-The inputs for these rules are identical except for the last input layer, in which the second rule, which deletes the foreground detail tiles, has the [Negate]{.tile .negate} [special tile](#specialtiles). This turns makes all those `input` layers act like `inputnot` layers, but only in that specific location. This means the first rule matches whenever it encounters any of those grassy-topped tiles, while the second rule matches whenever it encounters *anything other* than those grassy-topped tiles. The second rule could've also been made with a bunch of `inputnot` layers instead, but using the Negate tile reduces how many layers this rule map needs, and it's easier to see that the input tiles are negated when the layers are all viewed together:
+The inputs for these rules are identical except for the last input layer, in which the second rule, which deletes the foreground detail tiles, has the [Negate]{.tile .negate} [special tile](#specialtiles). This makes all those `input` layers act like `inputnot` layers, but only in that specific location. This means the first rule matches whenever it encounters any of those grassy-topped tiles, while the second rule matches whenever it encounters *anything other* than those grassy-topped tiles. The second rule could've also been made with a bunch of `inputnot` layers instead, but using the Negate tile reduces how many layers this rule map needs, and it's easier to see that the input tiles are negated when the layers are all viewed together:
 
 ![The two rules with both inputs and outputs visible, but the second rule has a negation sign over its platform tiles.](images/automapping/automap_example25.png)