fix: update broken documentation link in deprecation warning

The deprecation warning in Context.get_http_request() referenced a non-existent
URL https://gofastmcp.com/patterns/http-requests that returns 404. Updated to
point to the correct documentation at
https://gofastmcp.com/python-sdk/fastmcp-server-dependencies which contains
the actual get_http_request() function documentation.

Also updated the corresponding test to expect the new URL.

Fixes #1814

Co-authored-by: William Easton <strawgate@users.noreply.github.com>

src/fastmcp/server/context.py

@@ -573,7 +573,7 @@ class Context:
             warnings.warn(
                 "Context.get_http_request() is deprecated and will be removed in a future version. "
                 "Use get_http_request() from fastmcp.server.dependencies instead. "
-                "See https://gofastmcp.com/patterns/http-requests for more details.",
+                "See https://gofastmcp.com/python-sdk/fastmcp-server-dependencies for more details.",
                 DeprecationWarning,
                 stacklevel=2,
             )

tests/server/test_context.py

@@ -56,8 +56,9 @@ class TestContextDeprecations:
                     "Use get_http_request() from fastmcp.server.dependencies instead"
                     in str(warning.message)
                 )
-                assert "https://gofastmcp.com/patterns/http-requests" in str(
-                    warning.message
+                assert (
+                    "https://gofastmcp.com/python-sdk/fastmcp-server-dependencies"
+                    in str(warning.message)
                 )