Remove "brew update" from install page

Closes rdwatters/hugo-docs-concept#115

content/getting-started/installing.md

@@ -44,7 +44,7 @@ If you are on macOS and using [Homebrew][brew], you can install Hugo with the fo
 
 {{% code file="install-with-homebrew.sh" %}}
 ```bash
-brew update && brew install hugo
+brew install hugo
 ```
 {{% /code %}}
 
@@ -134,15 +134,7 @@ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/
 
 #### Step 2: Run the `brew` Command to Install `hugo`
 
-Whenever installing with Homebrew, it's a good idea to update the formulae and Homebrew itself by running the update command:
-
-{{% code file="update-brew.sh" %}}
-```bash
-brew update
-```
-{{% /code %}}
-
-You can then install Hugo using `brew`:
+Installing Hugo using `brew` is as easy as the following:
 
 {{% code file="install-brew.sh" %}}
 ```bash
@@ -156,7 +148,7 @@ If Homebrew is working properly, you should see something similar to the followi
 ==> Downloading https://homebrew.bintray.com/bottles/hugo-0.13_1.yosemite.bottle.tar.gz
 ######################################################################### 100.0%
 ==> Pouring hugo-0.13_1.yosemite.bottle.tar.gz
-🍺  /usr/local/Cellar/hugo/0.13_1: 4 files,  14M
+🍺  /usr/local/Cellar/hugo/0.21: 32 files, 17.4MB
 ```
 
 {{% note "Installing the Latest Hugo with Brew" %}}
@@ -502,4 +494,4 @@ Now that you've installed Hugo, read the [Quick Start guide][quickstart] and exp
 [releases]: https://github.com/spf13/hugo/releases
 [snaps]: http://snapcraft.io/docs/core/install
 [windowsarch]: https://esupport.trendmicro.com/en-us/home/pages/technical-support/1038680.aspx
-[Windows Environment Variables Editor]: http://eveditor.com/
+[Windows Environment Variables Editor]: http://eveditor.com/

content/templates/section-templates.md

@@ -125,4 +125,4 @@ Which then returns the following:
 [getpage]: /functions/getpage/
 [lists]: /templates/lists/
 [lookup]: /templates/lookup-order/
-[where]: /functions/where/
+[where]: /functions/where/