[x/go.dev] content/solutions: mv 'capital one' capital-one

Hugo is already doing this transformation when generating the static tree.
Make the source directory name match the serving directory name.

Change-Id: I65c13eff89e1728c3546eea2aa4618c20250c3df
X-GoDev-Commit: 9bdd0da00c6ca3c87b627dc6f3551ff5f1d12c1b
diff --git a/go.dev/content/solutions/capital one/index.md b/go.dev/content/solutions/capital-one/index.md
similarity index 100%
rename from go.dev/content/solutions/capital one/index.md
rename to go.dev/content/solutions/capital-one/index.md
diff --git a/go.dev/content/solutions/capital one/logo.svg b/go.dev/content/solutions/capital-one/logo.svg
similarity index 100%
rename from go.dev/content/solutions/capital one/logo.svg
rename to go.dev/content/solutions/capital-one/logo.svg