MetACSL->MetAcsl. Mention the public release.

_fc-plugins/metacsl.md

 ---
 layout: plugin
-title: MetACSL
+title: MetAcsl
 description: Verification of meta-properties
 key: specifications
 distrib_mode: proto
+repo_url: https://git.frama-c.com/pub/meta
 ---
 
 ## Overview
 
-MetACSL is a plug-in dedicated to specifying and verifying
+MetAcsl is a plug-in dedicated to specifying and verifying
 *meta-properties*, that is, properties that are supposed
 to be checked at many points of the code base under analysis,
 so that writing the corresponding ACSL annotations manually
@@ -17,9 +18,9 @@ of such a property would be a confidentiality property indicating
 that no access to a particular memory block should occur unless
 some clearance condition holds. Specifying that in pure ACSL
 would require writing an assertion for each read access in the
-code, while MetACSL only needs a single meta-property.
+code, while MetAcsl only needs a single meta-property.
 
-In summary, MetACSL defines a global ACSL extension for describing
+In summary, MetAcsl defines a global ACSL extension for describing
 meta properties, that are composed of three things:
 
 - a target: the set of functions where the meta-property should hold;
@@ -41,5 +42,6 @@ verify these annotations.
 
 ## Usage
 
-As the plugin is in an early stage of development, it is currently only
-available upon request.
+MetAcsl is available as a separate open-source plug-in, on [Gitlab](https://git.frama-c.com/pub/meta).
+It is intended to be compatible with the latest state of [Frama-C's public repository](https://git.frama-c.com/pub/frama-c).
+Once installed, the plugin is activated by the `-meta` option, which will parse the meta-properties and generate the corresponding ACSL annotations.
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