fix(curriculum): add reminder for neutral tone syllables in FITB feedback (freeCodeCamp#64727)

Author: huyenltnguyen

curriculum/challenges/english/blocks/zh-a1-learn-understanding-questions-and-answers/6911adab1df9af571f600863.md

@@ -31,7 +31,7 @@ Listen to the audio and complete the sentence below.
 
 ### --feedback--
 
-This is a question particle used at the end of a sentence.
+This is a question particle used at the end of a sentence. Don't forget to type 5 at the end for neutral tone syllables.
 
 # --explanation--
 

curriculum/challenges/english/blocks/zh-a1-learn-understanding-questions-and-answers/6911bcdd1ef7e704c8137b2c.md

@@ -31,7 +31,7 @@ Listen to the audio and complete the sentence below.
 
 ### --feedback--
 
-These two characters means "How about you?" or "And you?"
+These two characters means "How about you?" or "And you?" Don't forget to type 5 at the end for neutral tone syllables.
 
 # --explanation--
 

curriculum/challenges/english/blocks/zh-a1-learn-understanding-questions-and-answers/69144f69e6621e83cc306401.md

@@ -29,7 +29,7 @@ Listen to the audio and complete the sentence below.
 
 ### --feedback--
 
-This means "yes" or "that's right", often used to give a positive answer.
+This means "yes" or "that's right", often used to give a positive answer. Don't forget to type 5 at the end for neutral tone syllables.
 
 # --explanation--
 

curriculum/challenges/english/blocks/zh-a1-practice-exchanging-basic-information/691740419e56e024c83ad7c9.md

@@ -43,15 +43,15 @@ This phrase means "you are" and is used before a profession to ask about someone
 
 ### --feedback--
 
-This word means "yes" and is used to confirm a statement.
+This word means "yes" and is used to confirm a statement. Don't forget to type 5 at the end for neutral tone syllables.
 
 ---
 
 `你呢 (nǐ ne)`
 
 ### --feedback--
 
-This phrase means "and you?" and is used to return a question back to the other person.
+This phrase means "and you?" and is used to return a question back to the other person. Don't forget to type 5 at the end for neutral tone syllables.
 
 # --scene--
 

curriculum/challenges/english/blocks/zh-a1-practice-exchanging-basic-information/69182f75cc96e43363541510.md

@@ -49,15 +49,15 @@ This is used at the beginning of a question to make it more polite.
 
 ### --feedback--
 
-This phrase is used when asking for someone's name.
+This phrase is used when asking for someone's name. Don't forget to type 5 at the end for neutral tone syllables.
 
 ---
 
 `你呢 (nǐ ne)`
 
 ### --feedback--
 
-This is used to ask about the same information from the other person.
+This is used to ask about the same information from the other person. Don't forget to type 5 at the end for neutral tone syllables.
 
 ---
 

curriculum/challenges/english/blocks/zh-a1-warm-up-meeting-new-teammates/68fe27f120a1443005dfa6ef.md

@@ -29,7 +29,7 @@ Listen to the audio and complete the sentence below.
 
 ### --feedback--
 
-This word means "what" and is used to ask questions in Chinese.
+This word means "what" and is used to ask questions in Chinese. Don't forget to type 5 at the end for neutral tone syllables.
 
 # --explanation--
 

curriculum/challenges/english/blocks/zh-a1-warm-up-meeting-new-teammates/68ff2a79deb01d26232dd443.md

@@ -29,7 +29,7 @@ Listen to the audio and complete the sentence below.
 
 ### --feedback--
 
-This word means "name".
+This word means "name". Don't forget to type 5 at the end for neutral tone syllables.
 
 # --explanation--