Small README.md changes (#1957)

* Update make instructions for release and debug build. Update PostgreSQL glossary to proper version (14)

* Continued cleanup of build instructions including removal of redundancies

README.md

@@ -29,7 +29,7 @@ Pageserver consists of:
 ## Running local installation
 
 
-#### building on Linux
+#### Installing dependencies on Linux
 1. Install build dependencies and other useful packages
 
 * On Ubuntu or Debian this set of packages should be sufficient to build the code:
@@ -49,14 +49,7 @@ dnf install flex bison readline-devel zlib-devel openssl-devel \
 curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
 ```
 
-3. Build neon and patched postgres
-```sh
-git clone --recursive https://github.com/neondatabase/neon.git
-cd neon
-make -j`nproc`
-```
-
-#### building on OSX (12.3.1)
+#### Installing dependencies on OSX (12.3.1)
 1. Install XCode and dependencies
 ```
 xcode-select --install
@@ -76,10 +69,19 @@ brew install libpq
 brew link --force libpq
 ```
 
-4. Build neon and patched postgres
-```sh
+#### Building on Linux and OSX
+
+1. Build neon and patched postgres
+```
+# Note: The path to the neon sources can not contain a space.
+
 git clone --recursive https://github.com/neondatabase/neon.git
 cd neon
+
+# The preferred and default is to make a debug build. This will create a 
+# demonstrably slower build than a release build. If you want to use a release
+# build, utilize "`BUILD_TYPE=release make -j`nproc``" 
+
 make -j`nproc`
 ```
 
@@ -209,7 +211,7 @@ Same applies to certain spelling: i.e. we use MB to denote 1024 * 1024 bytes, wh
 To get more familiar with this aspect, refer to:
 
 - [Neon glossary](/docs/glossary.md)
-- [PostgreSQL glossary](https://www.postgresql.org/docs/13/glossary.html)
+- [PostgreSQL glossary](https://www.postgresql.org/docs/14/glossary.html)
 - Other PostgreSQL documentation and sources (Neon fork sources can be found [here](https://github.com/neondatabase/postgres))
 
 ## Join the development