Correct support status note for Pixel 2 and Xperia XA2 devices

Change-Id: I3876a8358f5071dd90d0fa4d348c71c27628d269
diff --git a/_sony/sonyxperiaxa2.markdown b/_sony/sonyxperiaxa2.markdown
index d60c394..8089245 100644
--- a/_sony/sonyxperiaxa2.markdown
+++ b/_sony/sonyxperiaxa2.markdown
@@ -12,7 +12,7 @@
 {% include disclaimer.html %}
 
 {% include supportstatus.html %}
-NOTE: Montly security updates may break decrypt in TWRP. MTP does not work at this time, but you can use adb to transfer files.
+NOTE: Monthly security updates may break decrypt in TWRP. MTP does not work at this time, but you can use adb to transfer files.
 
 {% include download.html %}