Fix markdown issues

Author: natalia-amorim

contents/blog/how-to-find-and-fix-onboarding-drop-off.mdx

@@ -311,7 +311,7 @@ Want statistical proof it worked? [Run an A/B experiment](/product-engineers/how
 
 While step isn't mandatory, [it helps avoid "we think this worked" decisions](/newsletter/what-we've-learned-about-ab-testing).
 
-** If using PostHog...**
+**If using PostHog...**
 
 Use [feature flags](/docs/feature-flags) to roll out your fix to a percentage of users first.
 
@@ -362,7 +362,7 @@ If it didn't, that's okay. Go back to Step 4 with a new hypothesis. Onboarding o
 <details>
 <summary><strong>What is onboarding drop-off?</strong></summary>
 
-**Onboarding drop-off **is when users start your onboarding flow but leave before completing it. They signed up and showed intent, but never reached the point where they experienced real value from your product (your activation event).
+**Onboarding drop-off** is when users start your onboarding flow but leave before completing it. They signed up and showed intent, but never reached the point where they experienced real value from your product (your activation event).
 
 Onboarding drop-off is [not the same as churn](/tutorials/churn-rate) – these users never really started using your product in the first place.
 </details>