chore: migrate api document generation to tool to crd-ref-docs (#5702)

* chore(docs): regenerate API reference documentation with new tool

- Replace old API doc generation script with crd-ref-docs tool invocation
- Update Makefile to download and use crd-ref-docs binary
- Set crd-ref-docs tool version and local binary path in Makefile

Signed-off-by: TzZtzt <trafalgarz@outlook.com>

* minor fix

Signed-off-by: TzZtzt <trafalgarz@outlook.com>

---------

Signed-off-by: TzZtzt <trafalgarz@outlook.com>

Author: TrafalgarZZZ

Makefile

@@ -203,8 +203,8 @@ gen-sdk:
 	./hack/sdk/gen-sdk.sh
 
 .PHONY: update-api-doc
-update-api-doc:
-	bash tools/api-doc-gen/generate_api_doc.sh && mv tools/api-doc-gen/api_doc.md docs/zh/dev/api_doc.md && cp docs/zh/dev/api_doc.md docs/en/dev/api_doc.md
+update-api-doc: crd-ref-docs
+	./bin/crd-ref-docs --source-path=api --output-path=docs/zh/dev/api_doc.md --config=./tools/crd-ref-docs/config.yaml --renderer=markdown && cp docs/zh/dev/api_doc.md docs/en/dev/api_doc.md
 
 # Build binary
 .PHONY: build
@@ -444,10 +444,12 @@ $(LOCALBIN):
 ## Tool Binaries
 CONTROLLER_GEN ?= $(LOCALBIN)/controller-gen
 GOLANGCI_LINT = $(LOCALBIN)/golangci-lint
+CRD_REF_DOCS ?= $(LOCALBIN)/crd-ref-docs
 
 ## Tool Versions
 CONTROLLER_TOOLS_VERSION ?= v0.19.0
 GOLANGCI_LINT_VERSION ?= v1.64.8
+CRD_REF_DOCS_VERSION ?= v0.3.0
 
 .PHONY: controller-gen
 controller-gen: $(CONTROLLER_GEN) ## Download controller-gen locally if necessary.
@@ -459,6 +461,11 @@ golangci-lint: $(GOLANGCI_LINT) ## Download golangci-lint locally if necessary.
 $(GOLANGCI_LINT): $(LOCALBIN)
 	$(call go-install-tool,$(GOLANGCI_LINT),github.com/golangci/golangci-lint/cmd/golangci-lint,$(GOLANGCI_LINT_VERSION))
 
+.PHONY: crd-ref-docs
+crd-ref-docs: $(CRD_REF_DOCS) ## Download crd-ref-docs locally if necessary.
+$(CRD_REF_DOCS): $(LOCALBIN)
+	$(call go-install-tool,$(CRD_REF_DOCS),github.com/elastic/crd-ref-docs,$(CRD_REF_DOCS_VERSION))
+
 # go-install-tool will 'go install' any package with custom target and name of binary, if it doesn't exist
 # $1 - target path with name of binary
 # $2 - package url which can be installed