Merge pull request Masterminds#329 from SaigyoujiYuyuko233/master

Fix some typo in doc

Author: mattfarina

README.md

@@ -50,7 +50,7 @@ To load the Sprig `FuncMap`:
 ```go
 
 import (
-  "github.com/Masterminds/sprig"
+  "github.com/Masterminds/sprig/v3"
   "html/template"
 )
 

docs/mathf.md

@@ -33,7 +33,7 @@ Perform integer division with `divf`
 This is equivalent to `10 / 2 / 4` and will return `1.25`:
 
 ```
-subf 10 2 4
+divf 10 2 4
 ```
 
 ## mulf
@@ -82,4 +82,4 @@ Returns the greatest float value greater than or equal to input value
 
 Returns a float value with the remainder rounded to the given number to digits after the decimal point.
 
-`round 123.555555` will return `123.556`
+`round 123.555555` will return `123.556`