Documentation Polishing

This change fixes a rogue line break in the Oracle JRE `cf set-env` example,
and unifies the documentation for all JREs.

[resolves cloudfoundry#769]

Signed-off-by: Ben Hale <bhale@pivotal.io>

docs/jre-ibm_jre.md

@@ -11,11 +11,12 @@ For general information on configuring the buildpack, including how to specify c
 
 The JRE can be configured by modifying the [`config/ibm_jre.yml`][] file in the buildpack fork.  The JRE uses the [`Repository` utility support][repositories] and so, it supports the [version syntax][]  defined there.
 
-To use IBM JRE instead of OpenJDK without forking java-buildpack, set environment variable:
+To use IBM JRE instead of OpenJDK without forking java-buildpack, set environment variable and restage:
 
-`cf set-env <app_name> JBP_CONFIG_COMPONENTS '{jres: ["JavaBuildpack::Jre::IbmJRE"]}'`
-
-`cf restage <app_name>`
+```bash
+cf set-env <app_name> JBP_CONFIG_COMPONENTS '{jres: ["JavaBuildpack::Jre::IbmJRE"]}'
+cf restage <app_name>
+```
 
 | Name | Description
 | ---- | -----------

docs/jre-oracle_jre.md

@@ -31,12 +31,13 @@ For general information on configuring the buildpack, including how to specify c
 
 The JRE can be configured by modifying the [`config/oracle_jre.yml`][] file in the buildpack fork.  The JRE uses the [`Repository` utility support][repositories] and so it supports the [version syntax][]  defined there.
 
-To use Oracle JRE instead of OpenJDK without forking java-buildpack, set environment variable:
+To use Oracle JRE instead of OpenJDK without forking java-buildpack, set environment variable and restage:
 
-`cf set-env <app_name> JBP_CONFIG_COMPONENTS '{ jres: [ "JavaBuildpack::Jre::OracleJRE" ] }'`
-`cf set-env <app_name> JBP_CONFIG_ORACLE_JRE '{ jre: { repository_root: "<INTERNAL_REPOSITORY_URI>" } }'`
-
-`cf restage <app_name>`
+```bash
+cf set-env <app_name> JBP_CONFIG_COMPONENTS '{ jres: [ "JavaBuildpack::Jre::OracleJRE" ] }'
+cf set-env <app_name> JBP_CONFIG_ORACLE_JRE '{ jre: { repository_root: "<INTERNAL_REPOSITORY_URI>" } }'
+cf restage <app_name>
+```
 
 | Name | Description
 | ---- | -----------

docs/jre-sap_machine_jre.md

@@ -22,11 +22,12 @@ For general information on configuring the buildpack, including how to specify c
 
 The JRE can be configured by modifying the [`config/sap_machine_jre.yml`][] file in the buildpack fork.  The JRE uses the [`Repository` utility support][repositories] and so it supports the [version syntax][]  defined there.
 
-To use SapMachine JRE instead of OpenJDK without forking java-buildpack, set environment variable:
+To use SapMachine JRE instead of OpenJDK without forking java-buildpack, set environment variable and restage:
 
-`cf set-env <app_name> JBP_CONFIG_COMPONENTS '{jres: ["JavaBuildpack::Jre::SapMachineJRE"]}'`
-
-`cf restage <app_name>`
+```bash
+cf set-env <app_name> JBP_CONFIG_COMPONENTS '{jres: ["JavaBuildpack::Jre::SapMachineJRE"]}'
+cf restage <app_name>
+```
 
 | Name | Description
 | ---- | -----------

docs/jre-zulu_jre.md

@@ -23,11 +23,12 @@ For general information on configuring the buildpack, including how to specify c
 
 The JRE can be configured by modifying the [`config/zulu_jre.yml`][] file in the buildpack fork.  The JRE uses the [`Repository` utility support][repositories] and so, it supports the [version syntax][]  defined there.
 
-To use Zulu JRE instead of OpenJDK without forking java-buildpack, set environment variable:
+To use Zulu JRE instead of OpenJDK without forking java-buildpack, set environment variable and restage:
 
-`cf set-env <app_name> JBP_CONFIG_COMPONENTS '{jres: ["JavaBuildpack::Jre::ZuluJRE"]}'`
-
-`cf restage <app_name>`
+```bash
+cf set-env <app_name> JBP_CONFIG_COMPONENTS '{jres: ["JavaBuildpack::Jre::ZuluJRE"]}'
+cf restage <app_name>
+```
 
 | Name | Description
 | ---- | -----------