fix(curriculum): fix grammar in greetings review (freeCodeCamp#64739)

Co-authored-by: majestic-owl448 <[email protected]>

Author: amit-kr-ghosh

curriculum/challenges/english/blocks/zh-a1-review-greetings-and-introductions/69021904538f084f5772a1d6.md

@@ -62,4 +62,4 @@ The neutral tone is the fifth tone in Chinese, marked by no tone mark. It's pron
 
 # --assignment--
 
-I confirm I read the glossary.
+I confirm I've read the glossary.

curriculum/challenges/english/blocks/zh-a1-review-greetings-and-introductions/69021947fa86ab50f9d3e287.md

@@ -32,7 +32,7 @@ In Chinese, there are different ways to say "hello" depending on who you're gree
 
 ### Using `我是 (wǒ shì)` to Introduce Yourself
 
-The phrase `我是 (wǒ shì)` is the most basic way to describe who your are, like your name, nationality, and profession. Examples:
+The phrase `我是 (wǒ shì)` is the most basic way to describe who you are, like your name, nationality, and profession. Examples:
 
 - `我是王华 (wǒ shì wáng huá)。` – I am Wang Hua.
 
@@ -42,4 +42,4 @@ The phrase `我是 (wǒ shì)` is the most basic way to describe who your are, l
 
 # --assignment--
 
-I confirm I read the grammar highlights.
+I confirm I've read the grammar highlights.