fix: typos in func cookbook (#912)

Author: VladasZ

languages/func/cookbook.mdx

@@ -1141,7 +1141,7 @@ Modifying methods allow data to be updated within the same variable, similar to
 ```func
 (slice, (int)) load_digit (slice s) {
     int x = s~load_uint(8); ;; load 8 bits (one char) from slice
-    x -= 48; ;; char '0' has code of 48, so we substract it to get the digit as a number
+    x -= 48; ;; char '0' has code of 48, so we subtract it to get the digit as a number
     return (s, (x)); ;; return our modified slice and loaded digit
 }
 
@@ -1246,7 +1246,7 @@ while (flag) {
 
 **References:**
 
-- [`Dictonaries primitives` in docs](/languages/func/stdlib/#dictionaries-primitives)
+- [Dictionaries primitives in docs](/languages/func/stdlib/#dictionaries-primitives)
 - [`dict_get_max?()` in docs](/languages/func/stdlib/#dict_get_max)
 - [`dict_get_min?()` in docs](/languages/func/stdlib/#dict_get_min)
 - [`dict_get_next?()` in docs](/languages/func/stdlib/#dict_get_next)