Change docs links to actual file extension (.md)

See https://gerrit-review.googlesource.com/83950 for detailed context.

Change-Id: I7796de90dacf7ecc61c42ba44685ffc71de9ab7e
diff --git a/src/main/resources/Documentation/config-common.md b/src/main/resources/Documentation/config-common.md
index 9e2c033..02565e3 100644
--- a/src/main/resources/Documentation/config-common.md
+++ b/src/main/resources/Documentation/config-common.md
@@ -118,7 +118,7 @@
 configured through a [rule base][rule-base] in
 `etc/its/actions.config`.
 
-[rule-base]: config-rulebase-common.html
+[rule-base]: config-rulebase-common.md
 
 
 
diff --git a/src/main/resources/Documentation/config-rulebase-common.md b/src/main/resources/Documentation/config-rulebase-common.md
index ed2946c..2ccb3f9 100644
--- a/src/main/resources/Documentation/config-rulebase-common.md
+++ b/src/main/resources/Documentation/config-rulebase-common.md
@@ -504,7 +504,7 @@
 
 [Further actions][further-actions] may be provided by @PLUGIN@.
 
-[further-actions]: config-rulebase-plugin-actions.html
+[further-actions]: config-rulebase-plugin-actions.md
 
 [action-add-comment]: #action-add-comment
 ### <a name="action-add-comment">Action: add-comment</a>
diff --git a/src/main/resources/Documentation/config-rulebase-plugin-actions.md b/src/main/resources/Documentation/config-rulebase-plugin-actions.md
index a0bbb50..0e6e73c 100644
--- a/src/main/resources/Documentation/config-rulebase-plugin-actions.md
+++ b/src/main/resources/Documentation/config-rulebase-plugin-actions.md
@@ -4,8 +4,8 @@
 @PLUGIN@ does not provide further specific actions. Only the [basic
 actions][basic-actions] are available.
 
-[basic-actions]: config-rulebase-common.html#actions
+[basic-actions]: config-rulebase-common.md#actions
 
 [Back to @PLUGIN@ documentation index][index]
 
-[index]: index.html
\ No newline at end of file
+[index]: index.html
diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index 6830e56..62e398c 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -9,9 +9,9 @@
 4. Restart gerrit, so the config changes take effect.
 5. Install the @PLUGIN@ jar in your gerrit site.
 
-[config-connectivity]: config-connectivity.html
-[config-common]: config-common.html
-[config-rulebase-common]: config-rulebase-common.html
+[config-connectivity]: config-connectivity.md
+[config-common]: config-common.md
+[config-rulebase-common]: config-rulebase-common.md
 
 Done :-)
 
@@ -19,4 +19,4 @@
 
 [Back to @PLUGIN@ documentation index][index]
 
-[index]: index.html
\ No newline at end of file
+[index]: index.html