docs: replace "slave" with "replica"

Change-Id: Ib76fa4265441f3ca90b17a594540da7a67005146
diff --git a/src/main/resources/Documentation/about.md b/src/main/resources/Documentation/about.md
index b0382af..deffe5e 100644
--- a/src/main/resources/Documentation/about.md
+++ b/src/main/resources/Documentation/about.md
@@ -28,7 +28,6 @@
 
 * `refs/users/*` (user branches)
 * `refs/meta/external-ids` (external IDs)
-* `refs/starred-changes/*` (star labels, not needed for Gerrit slaves)
+* `refs/starred-changes/*` (star labels, not needed for Gerrit replicas)
 * `refs/sequences/accounts` (account sequence numbers, not needed for Gerrit
-  slaves)
-
+  replicas)
diff --git a/src/main/resources/Documentation/cmd-start.md b/src/main/resources/Documentation/cmd-start.md
index e12ec92..1a77c72 100644
--- a/src/main/resources/Documentation/cmd-start.md
+++ b/src/main/resources/Documentation/cmd-start.md
@@ -129,10 +129,10 @@
   $ ssh -p @SSH_PORT@ @SSH_HOST@ @PLUGIN@ start documentation/*
 ```
 
-Replicate projects whose path includes a folder named `vendor` to host slave1:
+Replicate projects whose path includes a folder named `vendor` to host replica1:
 
 ```
-  $ ssh -p @SSH_PORT@ @SSH_HOST@ @PLUGIN@ start --url slave1 ^(|.*/)vendor(|/.*)
+  $ ssh -p @SSH_PORT@ @SSH_HOST@ @PLUGIN@ start --url replica1 ^(|.*/)vendor(|/.*)
 ```
 
 Replicate to only one specific destination URL: