Feat : replace BULLETTRAIN_GO_PREFIX for "go" to "ʕ◔ϖ◔ʔ"

* BULLETTRAIN_GO_PREFIX is replaced by "ʕ◔ϖ◔ʔ" to approve the proposal:
  cmd/go: add .ʕ◔ϖ◔ʔ as an alternate spelling of .go in file names (golang/go#59968)

Author: adrian-lin-1-0-0

bullet-train.zsh-theme

@@ -137,7 +137,7 @@ if [ ! -n "${BULLETTRAIN_GO_FG+1}" ]; then
   BULLETTRAIN_GO_FG=white
 fi
 if [ ! -n "${BULLETTRAIN_GO_PREFIX+1}" ]; then
-  BULLETTRAIN_GO_PREFIX="go"
+  BULLETTRAIN_GO_PREFIX="ʕ◔ϖ◔ʔ"
 fi
 
 # Rust