README.md in trackler-2.2.1.100

- old
+ new

@@ -4,18 +4,19 @@
 
 The **North American Numbering Plan (NANP)** is a telephone numbering system used by many countries in North America like the United States, Canada or Bermuda. All NANP-countries share the same international country code: `1`.
 
 NANP numbers are ten-digit numbers consisting of a three-digit Numbering Plan Area code, commonly known as *area code*, followed by a seven-digit local number. The first three digits of the local number represent the *exchange code*, followed by the unique four-digit number which is the *subscriber number*.
 
-
 The format is usually represented as
-```
+
+```text
 (NXX)-NXX-XXXX
 ```
+
 where `N` is any digit from 2 through 9 and `X` is any digit from 0 through 9.
 
-Your task is to clean up differently formated telephone numbers by removing punctuation and the country code (1) if present.
+Your task is to clean up differently formatted telephone numbers by removing punctuation and the country code (1) if present.
 
 For example, the inputs
 - `+1 (613)-995-0253`
 - `613-995-0253`
 - `1 613 995 0253`
@@ -24,10 +25,9 @@
 should all produce the output
 
 `6139950253`
 
 **Note:** As this exercise only deals with telephone numbers used in NANP-countries, only 1 is considered a valid country code.
-
 
 ## Getting Started
 For installation and learning resources, refer to the
 [exercism help page](http://exercism.io/languages/ocaml).
 