Add links and fix nits for extensions

README.md

@@ -41,17 +41,18 @@ pak::pak()
 
 ### Developing with Extensions
 If you wish to build or add extensions to the R package you first need to build duckdb with the 
-`extension_static_build` flag. The following commands allow you to add the httpfs extension to 
-a duckdb R build. See the [extension ReadMe](https://github.com/duckdb/duckdb/tree/master/extension#readme) for more 
-information about extensions 
+`extension_static_build` flag. The following commands allow you to add the [`httpfs` extension](https://duckdb.org/docs/extensions/httpfs) to 
+a DuckDB R build. 
 ```sh
 cd duckdb/
 EXTENSION_STATIC_BUILD=1 make
 ```
-Then in R
+Then in R, run:
 ```r
 library(duckdb)
 con <- DBI::dbConnect(duckdb(config=list('allow_unsigned_extensions'='true')))
 dbExecute(con, "LOAD '{{path_to_duckdb}}/build/release/extension/httpfs/httpfs.duckdb_extension'")
 ```
 
+For more information about using extensions, see the [documentation on extensions](https://duckdb.org/docs/extensions/overview).
+For instructions on building them, see [extension README](https://github.com/duckdb/duckdb/tree/main/extension#readme).

RELEASE.md

@@ -18,7 +18,7 @@ revdepcheck::revdep_check(num_workers = 8, env=c(`MAKEVARS`="-j8"))
 ## Source Package
 The R package does not automatically pick up the DuckDB version from the git tag. Make sure the file `DESCRIPTION` in the master branch has the `Version` entry that *you want to create*.
 
-It's important that package builds are created from the main branch of the duckdb/duckdb repo (not of a fork) because otherwise the git revision ids used to install extensions are wrong.
+It's important that package builds are created from the `main` branch of the [duckdb/duckdb repository](https://github.com/duckdb/duckdb) (not of a fork) because otherwise the git revision ids used to install extensions are wrong.
 
 You can get the R source tarball either from the build artifacts (r-package-source) or from a GitHub release after CI finishes (`duckdb_[version].tar.gz`).