fix

Author: adyanth

content/manuals/build/building/best-practices.md

@@ -616,7 +616,7 @@ resources, and a protocol for parsing branches, tags, and subdirectories from
 > `ADD` redownloads the file (or uses a HEAD request with [ETag](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/ETag)s
 > if the remote server supports it) every time the image is built to verify the checksum 
 > and monitor changes to bust the cache whereas the `RUN curl` equivalent only busts 
-> the cache and redownloads the file when the process arguments changes
+> the cache and redownloads the file when the process arguments change
 > (e.g. the URL in the curl command is changed). 
 > This may be significant if the file to be downloaded is large.