doc: Correct spelling errors in comments

And ci script output.

Identified via test/lint/lint-spelling

test/functional/feature_backwards_compatibility.py

@@ -113,7 +113,7 @@ class BackwardsCompatibilityTest(BitcoinTestFramework):
         # Create another conflicting transaction using RBF
         tx3_id = self.nodes[1].sendtoaddress(return_address, 1)
         tx4_id = self.nodes[1].bumpfee(tx3_id)["txid"]
-        # Abondon transaction, but don't confirm
+        # Abandon transaction, but don't confirm
         self.nodes[1].abandontransaction(tx3_id)
 
         # w1_v19: regular wallet, created with v0.19

test/lint/lint-shell.sh

@@ -41,7 +41,7 @@ if ! shellcheck "$EXCLUDE" $(git ls-files -- '*.sh' | grep -vE 'src/(leveldb|sec
 fi
 
 if ! command -v yq > /dev/null; then
-    echo "Skipping Gitian desriptor scripts checking since yq is not installed."
+    echo "Skipping Gitian descriptor scripts checking since yq is not installed."
     exit $EXIT_CODE
 fi
 

test/lint/lint-spelling.ignore-words.txt

@@ -12,3 +12,5 @@ keyserver
 homogenous
 setban
 hist
+ser
+unselect