Social SDK: Fix some typos/cleanup (#7737)

Author: markmandel

docs/discord-social-sdk/development-guides.mdx

@@ -65,9 +65,3 @@ If you are new to the Discord Social SDK, we recommend you start with the [Getti
     Add in-game voice communication.
   </Card>
 </Container>
-
-
-## Developer Best Practices
-
-<Container>
-</Container>

docs/discord-social-sdk/how-to/market-your-integration.mdx

@@ -121,7 +121,7 @@ review the Logo & Symbol sections of our brand guidelines. If you’re not sure
 ### Discord Bumper Splash Animation
 
 * Downloads:
-  * [3 second bumper splace animation video](https://cdn.discordapp.com/assets/content/edbc1f6c8b7b0ea968888a2588ff552c2f8b2090fc2aa13e97e224427d5ad03c.mov)
+  * [3 second bumper splash animation video](https://cdn.discordapp.com/assets/content/edbc1f6c8b7b0ea968888a2588ff552c2f8b2090fc2aa13e97e224427d5ad03c.mov)
   * [3 second bumper splash animation audio (TV)](https://cdn.discordapp.com/assets/content/efe58ff7a83b8063a0b60f41f171932ce7d26de78fe2e2c2c531e26edadac3d4.wav)
   * [3 second bumper splash animation audio (Streaming)](https://cdn.discordapp.com/assets/content/f3070170acd3f62b08ba9a63ab71080f6f7a72be5c84b74d1b247b4767696045.wav)
 * Best Practice Guidance for Discord Social SDK