Fix spell-check failure

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>

.github/lexicon.txt

diff --git a/.github/lexicon.txt b/.github/lexicon.txt
index 74f851e..480ac65 100644
--- a/.github/lexicon.txt
+++ b/.github/lexicon.txt
@@ -1518,9 +1518,11 @@
 prv
 prvaddcurrenttasktodelayedlist
 prvcheckinterfaces
+prvchecktaskswaitingtermination
 prvcopydatatoqueue
 prvcoroutineflashtask
 prvcoroutineflashworktask
+prvdeletetcb
 prvexitfunction
 prvgettimens
 prvheapinit