Update urls

Author: cpsievert

README.Rmd

@@ -65,7 +65,7 @@ Since `{bslib}` covers a wide array of uses, it has numerous getting started art
 
 There are two main places to get help with `bslib`:
 
-+ The [RStudio community](https://community.rstudio.com) is a friendly place to ask any questions (be sure to add a `bslib` tag when creating a topic).
++ The [RStudio community](https://forum.posit.co/) is a friendly place to ask any questions (be sure to add a `bslib` tag when creating a topic).
 
 + [Stack Overflow](https://stackoverflow.com/questions/tagged/bslib) is a great source of answers to common `bslib` questions. It is also a great place to get help, once you have created a reproducible example that illustrates your problem. Use the tags [`[r][bslib]`](https://stackoverflow.com/questions/tagged/bslib+r) if you ask a question. Add the tag `[bslib]` if you are using a Shiny runtime.
 

README.md

@@ -69,7 +69,7 @@ started articles, each focusing on a particular interest:
 
 There are two main places to get help with `bslib`:
 
-- The [RStudio community](https://community.rstudio.com) is a friendly
+- The [RStudio community](https://forum.posit.co/) is a friendly
   place to ask any questions (be sure to add a `bslib` tag when creating
   a topic).