[#1998]fix a bug where filter was not currently working properly in triple protocol

[Mulavar]

…fix some spelling mistake

What this PR does:
fix a bug where filter was not currently working properly and fix some spelling mistake

Which issue(s) this PR fixes:
Fixes #1988

You should pay attention to items below to ensure your pr passes our ci test
We do not merge pr with ci tests failed

• All ut passed (run 'go test ./...' in project root)
• After go-fmt ed , run 'go fmt project' using goland.
• Golangci-lint passed, run 'sudo golangci-lint run' in project root.
• After import formatted, (using imports-formatter to run 'imports-formatter .' in project root, to format your import blocks, mentioned in CONTRIBUTING.md above)
• Your new-created file needs to have apache license at the top, like other existed file does.
• All integration test passed. You can run integration test locally (with docker env). Clone our dubbo-go-samples project and replace the go.mod to your dubbo-go, and run 'sudo sh start_integration_test.sh' at root of samples project root. (M1 Slice is not Support)

[codecov-commenter]

Codecov Report

Merging #1999 (089bd3c) into 3.0 (de6fcfb) will increase coverage by 0.15%.
The diff coverage is 49.09%.

@@            Coverage Diff             @@
##              3.0    #1999      +/-   ##
==========================================
+ Coverage   44.32%   44.47%   +0.15%     
==========================================
  Files         283      283              
  Lines       17067    17067              
==========================================
+ Hits         7565     7591      +26     
+ Misses       8696     8673      -23     
+ Partials      806      803       -3     

Impacted Files	Coverage Δ
protocol/dubbo/dubbo_invoker.go	27.83% <0.00%> (ø)
protocol/protocol.go	0.00% <0.00%> (ø)
protocol/rest/rest_exporter.go	0.00% <0.00%> (ø)
remoting/zookeeper/listener.go	0.00% <ø> (ø)
config/service_config.go	53.04% <50.00%> (ø)
filter/token/filter.go	53.12% <58.82%> (-6.88%)	⬇️
protocol/dubbo3/dubbo3_exporter.go	83.33% <66.66%> (ø)
protocol/dubbo3/dubbo3_invoker.go	55.65% <66.66%> (ø)
registry/protocol/protocol.go	72.10% <75.00%> (ø)
protocol/dubbo/dubbo_exporter.go	100.00% <100.00%> (ø)
... and 9 more

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[justxuewei]

@Mulavar The wrong branch (master) is set, please submit a new PR and set to the correct branch.

[Mulavar]

I've changed the base branch that this pr should be merged into and re-open the pr.