Update README.md

Prompt Format Added

README.md

@@ -110,6 +110,18 @@ The model is capable of detecting the following PII entities:
   - `ordinaldirection`
   - `prefix`
 
+## Prompt Format
+```bash
+### Instruction:
+  Identify and extract the following PII entities from the text, if present: companyname, pin, currencyname, email, phoneimei, litecoinaddress, currency, eyecolor, street, mac, state, time, vehiclevin, jobarea, date, bic, currencysymbol, currencycode, age, nearbygpscoordinate, amount, ssn, ethereumaddress, zipcode, buildingnumber, dob, firstname, middlename, ordinaldirection, jobtitle, bitcoinaddress, jobtype, phonenumber, height, password, ip, useragent, accountname, city, gender, secondaryaddress, iban, sex, prefix, ipv4, maskednumber, url, username, lastname, creditcardcvv, county, vehiclevrm, ipv6, creditcardissuer, accountnumber, creditcardnumber. Return the output in JSON format.
+
+### Input:
+  Greetings, Mason! Let's celebrate another year of wellness on 14/01/1977. Don't miss the event at 176,Apt. 388.
+
+### Output:
+
+```
+
 ## Usage
 
 ### Installation