Update distance-analysis.md

install with update site

Author: JeffGilles

_pages/plugins/distance-analysis.md

@@ -142,11 +142,15 @@ To compute closest borders, use a 'b' after the number of closest objects: ... a
 
 ## Installation
 
-Download and copy the following jar in your plugins folder [Diana\_1.54.jar](https://github.com/JeffGilles/DiAna/releases/download/v1.54/DiAna_1.54.jar)
-
-You have also to manually download and copy into your plugins directory the [3D ImageJ Suite](https://mcib3d.frama.io/3d-suite-imagej/).
-
-*Note that this version works only with the 3D ImageJ library [mcib3d-core4.0.1.jar] and upper!*
+- In ImageJ 1.x:
+  1.  Download and copy the following jar in your plugins folder [Diana\_1.54.jar](https://github.com/JeffGilles/DiAna/releases/download/v1.54/DiAna_1.54.jar)
+  2.  You have also to manually download and copy into your plugins directory the [3D ImageJ Suite](https://mcib3d.frama.io/3d-suite-imagej/).
+
+- In Fiji, [ add](/update-sites/following#add-update-sites) the DistanceAnalysis site to your list of update sites:
+    1.  Select {% include bc path='Help | Update...' %} from the menu to start the [updater](/plugins/updater).
+    2.  Click on *Manage update sites*. 
+    3.  Activate the DistanceAnalysis update site and close the dialog. 
+    4.  Click *Apply changes* and restart ImageJ. 
 
 ## Citation