Fix docstring.

bakpakin · bakpakin · commit 5171dfd2a88b · 2019-11-16T20:43:21.000-06:00
diff --git a/src/boot/boot.janet b/src/boot/boot.janet
@@ -847,7 +847,7 @@
 
 (defn walk
   "Iterate over the values in ast and apply f
-  to them. Collect the results in a data structure . If ast is not a
+  to them. Collect the results in a data structure. If ast is not a
   table, struct, array, or tuple,
   returns form."
   [f form]
