docs: fail build on warnings and fix existing warns (#3342)

Signed-off-by: Anant Sharma <anants@nvidia.com>

docs/Makefile

@@ -18,7 +18,7 @@
 
 # You can set these variables from the command line, and also
 # from the environment for the first two.
-SPHINXOPTS        ?=
+SPHINXOPTS        ?= -W
 SPHINXBUILD       ?= sphinx-build
 SOURCEDIR          = .
 BUILDDIR           = build

docs/_includes/dive_in_examples.rst

@@ -5,8 +5,8 @@ The examples below assume you build the latest image yourself from source. If us
     :margin: 0
     :padding: 3 4 0 0
 
-    .. grid-item-card:: :doc:`Hello World <../examples/custom_backend/hello_world/README>`
-        :link: ../examples/custom_backend/hello_world/README
+    .. grid-item-card:: :doc:`Hello World <../examples/runtime/hello_world/README>`
+        :link: ../examples/runtime/hello_world/README
         :link-type: doc
 
         Demonstrates the basic concepts of Dynamo by creating a simple GPU-unaware graph

docs/examples/runtime/hello_world/README.md

-../../../../examples/runtime/hello_world/README.md
+../../../../examples/custom_backend/hello_world/README.md
\ No newline at end of file

docs/hidden_toctree.rst

@@ -47,7 +47,7 @@
    components/backends/sglang/docs/multinode-examples.md
 
    examples/README.md
-   examples/custom_backend/hello_world/README.md
+   examples/runtime/hello_world/README.md
 
    architecture/distributed_runtime.md
    architecture/dynamo_flow.md

docs/kubernetes/metrics.md

@@ -137,7 +137,7 @@ Visit http://localhost:9090 and try these example queries:
 - `dynamo_frontend_requests_total`
 - `dynamo_frontend_time_to_first_token_seconds_bucket`
 
-![Prometheus UI showing Dynamo metrics](../../images/prometheus-k8s.png)
+![Prometheus UI showing Dynamo metrics](../images/prometheus-k8s.png)
 
 ### In Grafana
 ```bash
@@ -155,4 +155,4 @@ Visit http://localhost:3000 and log in with the credentials captured above.
 
 Once logged in, find the Dynamo dashboard under General.
 
-![Grafana dashboard showing Dynamo metrics](../../images/grafana-k8s.png)
+![Grafana dashboard showing Dynamo metrics](../images/grafana-k8s.png)