README.md: change the nanoidgen(1) usage style

lukateras · Jan 3, 2025 · 6ea9ec3 · 6ea9ec3
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diff --git a/README.md b/README.md
@@ -90,7 +90,9 @@ See the PDF manual at <https://lukateras.github.io/nanoid.h/man.pdf>.
 
 ### [`nanoidgen(1)`][]
 
-Usage: `nanoidgen [length]`
+```
+$ nanoidgen [length]
+```
 
 Generates a Nano ID of the default length, or the specified length within 1 and
 256, and prints it to the standard output.

diff --git a/openbsd/README.md b/openbsd/README.md
@@ -90,7 +90,9 @@ See the PDF manual at <https://lukateras.github.io/nanoid.h/openbsd/man.pdf>.
 
 ### [`nanoidgen(1)`][]
 
-Usage: `nanoidgen [length]`
+```
+$ nanoidgen [length]
+```
 
 Generates a Nano ID of the default length, or the specified length within 1 and
 256, and prints it to the standard output.