Merge pull request #1548 from fluent/lynettemiles/sc-105725/update-installation-linux-ubuntu-md-fluent

Update ubuntu install page for style and grammar

Author: esmerel

installation/linux/ubuntu.md

@@ -1,32 +1,38 @@
 # Ubuntu
 
-Fluent Bit is distributed as **fluent-bit** package and is available for long-term support releases of Ubuntu. 
-The latest officially supported version is Noble Numbat (24.04).
+Fluent Bit is distributed as the `fluent-bit` package and is available for long-term
+support releases of Ubuntu. The latest officially supported version is Noble Numbat
+(24.04).
 
 ## Single line install
 
-A simple installation script is provided to be used for most Linux targets.
+An installation script is provided for most Linux targets.
 This will always install the most recent version released.
 
 ```bash
 curl https://raw.githubusercontent.com/fluent/fluent-bit/master/install.sh | sh
 ```
 
 This is purely a convenience helper and should always be validated prior to use.
-The recommended secure deployment approach is to follow the instructions below.
+The recommended secure deployment approach is to use the following instructions.
 
 ## Server GPG key
 
-The first step is to add our server GPG key to your keyring to ensure you can get our signed packages.
-Follow the official Debian wiki guidance: <https://wiki.debian.org/DebianRepository/UseThirdParty#OpenPGP\_Key\_distribution>
+The first step is to add the Fluent Bit server GPG key to your keyring to ensure
+you can get the correct signed packages.
+
+Follow the official
+[Debian wiki guidance](https://wiki.debian.org/DebianRepository/UseThirdParty#OpenPGP_Key_distribution).
 
 ```bash
 curl https://packages.fluentbit.io/fluentbit.key | gpg --dearmor > /usr/share/keyrings/fluentbit-keyring.gpg
 ```
 
 ### Updated key from March 2022
 
-From the 1.9.0 and 1.8.15 releases please note that the GPG key has been updated at [https://packages.fluentbit.io/fluentbit.key](https://packages.fluentbit.io/fluentbit.key) so ensure this new one is added.
+For releases 1.9.0 and 1.8.15 and later, the
+[GPG key has been updated](https://packages.fluentbit.io/fluentbit.key). Ensure
+the new key is added.
 
 The GPG Key fingerprint of the new key is:
 
@@ -35,53 +41,63 @@ C3C0 A285 34B9 293E AF51  FABD 9F9D DC08 3888 C1CD
 Fluentbit releases (Releases signing key) <[email protected]>
 ```
 
-The previous key is still available at [https://packages.fluentbit.io/fluentbit-legacy.key](https://packages.fluentbit.io/fluentbit-legacy.key) and may be required to install previous versions.
+The previous key is [still available](https://packages.fluentbit.io/fluentbit-legacy.key)
+and might be required to install previous versions.
 
 The GPG Key fingerprint of the old key is:
 
 ```text
 F209 D876 2A60 CD49 E680 633B 4FF8 368B 6EA0 722A
 ```
 
-Refer to the [supported platform documentation](../supported-platforms.md) to see which platforms are supported in each release.
+Refer to the [supported platform documentation](../supported-platforms.md) to see
+which platforms are supported in each release.
 
 ## Update your sources lists
 
-On Ubuntu, you need to add our APT server entry to your sources lists, please add the following content at bottom of your **/etc/apt/sources.list** file - ensure to set `CODENAME` to your specific [Ubuntu release name](https://wiki.ubuntu.com/Releases) (e.g. `focal` for Ubuntu 20.04):
+On Ubuntu, you need to add the Fluent Bit APT server entry to your sources lists.
+Add the following content at bottom of your `/etc/apt/sources.list` file. Ensure
+`CODENAME` is set to your specific [Ubuntu release name](https://wiki.ubuntu.com/Releases).
+For example, `focal` for Ubuntu 20.04.
 
 ```bash
 deb [signed-by=/usr/share/keyrings/fluentbit-keyring.gpg] https://packages.fluentbit.io/ubuntu/${CODENAME} ${CODENAME} main
 ```
 
 ### Update your repositories database
 
-Now let your system update the _apt_ database:
+Update the `apt` database on your system:
 
 ```bash
 sudo apt-get update
 ```
 
 {% hint style="info" %}
-We recommend upgrading your system (`sudo apt-get upgrade`). This could avoid potential issues with expired certificates.
-{% endhint %}
+Fluent Bit recommends upgrading your system to avoid potential issues
+with expired certificates:
 
-{% hint style="info" %}
-If you have the following error "Certificate verification failed", you might want to check if the package `ca-certificates` is properly installed (`sudo apt-get install ca-certificates`).
+`sudo apt-get upgrade`
+
+
+If you receive the error `Certificate verification failed`, check if the package
+`ca-certificates` is properly installed:
+
+`sudo apt-get install ca-certificates`
 {% endhint %}
 
 ## Install Fluent Bit
 
-Using the following _apt-get_ command you are able now to install the latest _fluent-bit_:
+1. Use the following `apt-get` command to install the latest Fluent Bit:
 
-```text
-sudo apt-get install fluent-bit
-```
+   ```bash copy
+   sudo apt-get install fluent-bit
+   ```
 
-Now the following step is to instruct _systemd_ to enable the service:
+1. Instruct `systemd` to enable the service:
 
-```bash
-sudo systemctl start fluent-bit
-```
+   ```bash copy
+   sudo systemctl start fluent-bit
+   ```
 
 If you do a status check, you should see a similar output like this:
 
@@ -99,4 +115,6 @@ systemctl status fluent-bit
 ...
 ```
 
-The default configuration of **fluent-bit** is collecting metrics of CPU usage and sending the records to the standard output, you can see the outgoing data in your _/var/log/syslog_ file.
+The default configuration of `fluent-bit` is collecting metrics of CPU usage and
+sending the records to the standard output. You can see the outgoing data in your
+`/var/log/syslog` file.