vale: also check for two-letter acronyms

Signed-off-by: David Karlsson <[email protected]>

Author: dvdksn

_vale/Docker/Acronyms.yml

@@ -4,8 +4,8 @@ link: https://docs.docker.com/contribute/style/grammar/#acronyms-and-initialisms
 level: warning
 ignorecase: false
 # Ensures that the existence of 'first' implies the existence of 'second'.
-first: '\b([A-Z]{3,5})\b'
-second: '(?:\b[A-Z][a-z]+ )+\(([A-Z]{3,5})\)'
+first: '\b([A-Z]{2,5})\b'
+second: '(?:\b[A-Z][a-z]+ )+\(([A-Z]{2,5})\)'
 # ... with the exception of these:
 exceptions:
   - AGPL

_vale/config/vocabularies/Docker/accept.txt

@@ -1,4 +1,4 @@
-(?-i)[A-Z]{3,}s
+(?-i)[A-Z]{2,}s
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