Fix e2e test suite doc (#10396)

* Fix e2e test suite doc

Signed-off-by: z1cheng <imchench@gmail.com>

* Fix doc script and regenerate

Signed-off-by: z1cheng <imchench@gmail.com>

* Add skip files to the script and regenerate

Signed-off-by: z1cheng <imchench@gmail.com>

---------

Signed-off-by: z1cheng <imchench@gmail.com>

hack/generate-e2e-suite-doc.sh

@@ -21,6 +21,12 @@ fi
 URL="https://github.com/kubernetes/ingress-nginx/tree/main/"
 DIR=$(cd $(dirname "${BASH_SOURCE}")/.. && pwd -P)
 
+declare -A skip_files=(
+    ["$DIR/test/e2e/framework/framework.go"]=1
+    ["$DIR/test/e2e/e2e.go"]=1
+    ["$DIR/test/e2e/e2e_test.go"]=1
+)
+
 echo "<!---
 This file is autogenerated!
 Do not try to edit it manually.
@@ -31,8 +37,16 @@ Do not try to edit it manually.
 "
 
 for FILE in $(find $DIR/test/e2e -name "*.go");do
+    # skip files
+    if [ ${skip_files[$FILE]} ]; then
+        continue
+    fi
+
     # describe definition
     DESCRIBE=$(cat $FILE | grep -n -oP 'Describe.*')
+    if [ -z "$DESCRIBE" ]; then
+        continue
+    fi
     # line number
     DESCRIBE_LINE=$(echo $DESCRIBE | cut -f1 -d ':')
     # clean describe, extracting the string