chore(docs): update examples of Dict.ark to be accurate

Author: SuperFola

Dict.ark

@@ -102,8 +102,9 @@
 # @param _f function to apply to each value, taking both key and value as arguments
 # =begin
 # (let data (dict "key" "value"))
-# (dict:map data (fun (key value) (format "{}-{}" key value)))
-# (print data)  # {key: key-value}
+# (let new (dict:map data (fun (key value) (format "{}-{}" key value))))
+# (print data)  # {key: value}
+# (print new)  # {key: key-value}
 # =end
 # @author https://github.com/SuperFola
 (let map (fun (_D _f) {
@@ -122,7 +123,7 @@
 # @param _f function to apply to each value, taking both key and value as arguments
 # =begin
 # (let data (dict "key" "value"))
-# (dict:map data (fun (key value) (format "{}-{}" key value)))
+# (dict:map! data (fun (key value) (format "{}-{}" key value)))
 # (print data)  # {key: key-value}
 # =end
 # @author https://github.com/SuperFola
@@ -181,9 +182,8 @@
 # @param _f predicate, taking both key and value as arguments
 # =begin
 # (let data (dict "key" "value" "hello" "world"))
-# (let new (dict:filter data (fun (key value) (> (len key) 3))))
-# (print data)  # {key: value, hello: world}
-# (print new)  # {hello: world}
+# (dict:filter! data (fun (key value) (> (len key) 3)))
+# (print data)  # {hello: world}
 # =end
 # @author https://github.com/SuperFola
 (let filter! (fun (_D _f) {
@@ -224,7 +224,7 @@
 # =begin
 # (let data (dict "key" "value" "hello" "world"))
 # (let new (dict "key" "new value" 5 12))
-# (dict:update data new)
+# (dict:update! data new)
 # (print data)  # {key: new value, hello: world, 5: 12}
 # =end
 # @author https://github.com/SuperFola