Add images to Normal Function and Coroutine table

Updated the table to include images for Normal Function and Coroutine.

Author: rmcdaniel

blog/2022-10-29-email-verifications.md

@@ -88,7 +88,9 @@ class VerifyEmailWorkflow extends Workflow
 
 Take notice of the `yield` keywords. Because PHP (and most other languages) cannot save their execution state, coroutines rather than normal functions are used inside of workflows (but not activities). A coroutine will be called multiple times in order to execute to completion.
 
-![graph](https://miro.medium.com/max/1400/1*6eE2Gll61IbAAU85Md75OQ.webp)
+| Normal Function | Coroutine |
+|-----------------|-----------|
+| [![](https://mermaid.ink/img/pako:eNplkTtvwyAQgP-KdbNjYYIDZuiSKFO7darpQGxiW7UhuoD6sPLfi52m6uMm7uO-O9BNULvGgITj4F7rTqNPHnfKJjHO4dCiPnXJPa32wda-d_b5ejXHPtcVGh_wBo1tlP2r5tVWD4PBH-I2inWEv9Chivr_RrE2Wa3u5mFXsP8C0VAWUmixb0B6DCaF0eCo5xSmuViB78xoFMh4bDS-KFD2Ep2Ttk_OjTcNXWg7kEc9nGMWTo32Ztfr-IHxm2J8k8GtC9aD5BuxNAE5wRtISvJMEE5yQSgpqWApvINcM5KJghfFuiSCUbG-pPCxTCUZ41RwXrKS8Q1llPAUTNN7hw_XXSwruXwC4h15Pw?type=png)](https://mermaid.live/edit#pako:eNplkTtvwyAQgP-KdbNjYYIDZuiSKFO7darpQGxiW7UhuoD6sPLfi52m6uMm7uO-O9BNULvGgITj4F7rTqNPHnfKJjHO4dCiPnXJPa32wda-d_b5ejXHPtcVGh_wBo1tlP2r5tVWD4PBH-I2inWEv9Chivr_RrE2Wa3u5mFXsP8C0VAWUmixb0B6DCaF0eCo5xSmuViB78xoFMh4bDS-KFD2Ep2Ttk_OjTcNXWg7kEc9nGMWTo32Ztfr-IHxm2J8k8GtC9aD5BuxNAE5wRtISvJMEE5yQSgpqWApvINcM5KJghfFuiSCUbG-pPCxTCUZ41RwXrKS8Q1llPAUTNN7hw_XXSwruXwC4h15Pw) | [![](https://mermaid.ink/img/pako:eNptkj1vwyAQhv-KdbMTYUwKZujibFGXqlPtDsQQ26oNFgb1I8p_L7GdKKlyE_c-3HscuiNURirgcOjMV9UI66K3bamjEKPf11YMTfSKi9xY412r1cfMzrFLitGPg9LyVsSPxLSwynmrFy3QUv9vkhS56Dplb-pyLIoqiHfSPniNvld3YvVIlIU01xff9Ay20Wr1HAaY810ypcH6wvczxwvHC68uvJp5uvB04aEDxFDbVgJ31qsYemV7cU7heL5bgmtUr0rg4SiF_Syh1KdQMwj9bkx_KQufXTfAD6IbQ-YHKZzatiL8VH9VbZhI2dx47YDTBE8mwI_wDRyjZM0QRQlDGGWYkRh-gKcErdmGbjZphhjBLD3F8Dt1RWtCMaM0IxmhT5hgRGNQsnXGvszrMW3J6Q9Ifp7J?type=png)](https://mermaid.live/edit#pako:eNptkj1vwyAQhv-KdbMTYUwKZujibFGXqlPtDsQQ26oNFgb1I8p_L7GdKKlyE_c-3HscuiNURirgcOjMV9UI66K3bamjEKPf11YMTfSKi9xY412r1cfMzrFLitGPg9LyVsSPxLSwynmrFy3QUv9vkhS56Dplb-pyLIoqiHfSPniNvld3YvVIlIU01xff9Ay20Wr1HAaY810ypcH6wvczxwvHC68uvJp5uvB04aEDxFDbVgJ31qsYemV7cU7heL5bgmtUr0rg4SiF_Syh1KdQMwj9bkx_KQufXTfAD6IbQ-YHKZzatiL8VH9VbZhI2dx47YDTBE8mwI_wDRyjZM0QRQlDGGWYkRh-gKcErdmGbjZphhjBLD3F8Dt1RWtCMaM0IxmhT5hgRGNQsnXGvszrMW3J6Q9Ifp7J) |
 
 Even though this workflow will execute to completion effectively once, it will still be partially executed four different times. The results of activities are cached so that only failed activities will be called again. Successful activities get skipped.