findmissing: Fix typo in branch list

4,14 -> 4.14

Change-Id: I2962a445a5000bb2e6385c9cc1a1cb6978ff9d93
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2152848
Reviewed-by: Hirthanan Subenderan <hirthanan@google.com>
diff --git a/contrib/findmissing/common.py b/contrib/findmissing/common.py
index 23ad0c2..8029654 100755
--- a/contrib/findmissing/common.py
+++ b/contrib/findmissing/common.py
@@ -31,7 +31,7 @@
 
 # Order BRANCHES from oldest to newest
 CHROMEOS_BRANCHES = ['4.4', '4.14', '4.19', '5.4']
-STABLE_BRANCHES = ['4.4', '4.9', '4,14', '4.19', '5.4', '5.5', '5.6']
+STABLE_BRANCHES = ['4.4', '4.9', '4.14', '4.19', '5.4', '5.5', '5.6']
 
 UPSTREAM_START_BRANCH = 'v%s' % CHROMEOS_BRANCHES[0]