jams/index.md: cleanup, JAMS logo, table

Add JAMS logo

Word wrap table contents
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https://pandemic-overview.readthedocs.io/en/latest/myGuides/reStructuredText-Tables-Examples.html

, → .

Setup → Set up

Change-Id: I21214646a2caaf35a2ffd731c46ccf4244753ffd

jams/index.md

+![«Image: JAMS logo»](images/logo-jams.png "JAMS logo")
+
 # JAMS manual
 
 ![«Image:Jami Account Management Server (JAMS)»](images/jams-hero.png "Jami Account Management Server (JAMS)")
@@ -33,14 +35,20 @@ The source code is available at [https://git.jami.net/savoirfairelinux/jami-jams
 
 ### System requirements
 
-| Requirement          | Details                                                                                                                                   |
-| -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------- |
-| **Processor**        | 1 gigahertz (GHz) or faster with 1 or more cores on a compatible 64-bit processor or System on a Chip (SoC).                              |
-| **RAM**              | 4 gigabytes (GB).                                                                                                                         |
-| **Storage**          | 1 gigabyte (GB) of available storage space.                                                                                               |
-| **Operating system** | GNU/Linux, Apple macOS, or Microsoft Windows.                                                                                             |
-| **Java**             | Version 11 or higher.                                                                                                                     |
-| **Database**         | LDAP-compatible directory (such as [OpenLDAP](https://www.openldap.org/)), Microsoft Active Directory (AD), or a local embedded database. |
+```{table}
+:widths: auto
+
+====================  =========================================================================================================================================
+Requirement           Details
+====================  =========================================================================================================================================
+**Processor**         1 gigahertz (GHz) or faster with 1 or more cores on a compatible 64-bit processor or System on a Chip (SoC).
+**RAM**               4 gigabytes (GB).
+**Storage**           1 gigabyte (GB) of available storage space.
+**Operating system**  GNU/Linux, Apple macOS, or Microsoft Windows.
+**Java**              Version 11 or higher.
+**Database**          LDAP-compatible directory (such as [OpenLDAP](https://www.openldap.org/)), Microsoft Active Directory (AD), or a local embedded database.
+====================  =========================================================================================================================================
+```
 
 ### JAMS concepts
 
@@ -202,12 +210,12 @@ This option allows for the creation of Jami users on the fly directly from the J
 By default, the "Use public name server" option is disabled.
 Jami usernames of JAMS users will not be stored on the public Jami name server.
 Users can communicate with users outside the organization by using their 40-character fingerprint.
-Enable this option to allow JAMS users in the organisation to also search for external users on the public name server,
+Enable this option to allow JAMS users in the organisation to also search for external users on the public name server.
 ```
 
-### Step 4: Setup the server parameters
+### Step 4: Set up the server parameters
 
-![«Image: JAMS: Setup server parameters»](images/jams-step-4.png "JAMS: Setup server parameters")
+![«Image: JAMS: Set up server parameters»](images/jams-step-4.png "JAMS: Set up server parameters")
 
 | Parameter                                | Details                                                                                             |
 | ---------------------------------------- | --------------------------------------------------------------------------------------------------- |