update README

README.md

@@ -58,7 +58,7 @@ PinpointQA is organized as a progressive four-stage benchmark:
 
 PinpointQA contains **102 canonical target categories** at the benchmark-definition level.
 
-You may notice that the dataset viewer reports **more distinct string values** in the `target` column. This is expected: some semantically equivalent or near-equivalent names are preserved as **surface forms** in released text fields for readability and compatibility with source annotations or task phrasing. Examples include naming variants such as **`mobile phone`** and **`phone`**.
+You may notice that the dataset viewer reports **more distinct string values** in the target column. This is expected: some semantically equivalent or near-equivalent names are preserved as **surface forms** in released text fields for readability and compatibility with source annotations or task phrasing. Examples include naming variants such as **`mobile phone`** and **`phone`**.
 
 When reporting benchmark statistics in the paper and project page, we count categories at the **canonical category** level rather than the raw string-surface level.