Use text keyword for directory example code blocks
@@ -791,14 +791,14 @@ The following keyword arguments are supported:
Since 0.45.0
For a given directory `foo`:
-```
+```text
foo/
bar/
file1
file2
```
`install_subdir('foo', install_dir : 'share', strip_directory : false)` creates
-```
+```text
share/
foo/
bar/
@@ -807,7 +807,7 @@ share/
```
`install_subdir('foo', install_dir : 'share', strip_directory : true)` creates
-```
+```text
share/
bar/
file1
@@ -815,14 +815,14 @@ share/
```
`install_subdir('foo/bar', install_dir : 'share', strip_directory : false)` creates
-```
+```text
share/
bar/
file1
```
`install_subdir('foo/bar', install_dir : 'share', strip_directory : true)` creates
-```
+```text
share/
file1
```
