Rollup merge of #90232 - konan8205:master, r=GuillaumeGomez

rustdoc: Use TTF based font instead of OTF for CJK glyphs to improve readability

Due to Windows' implementation of font rendering, OpenType fonts can be distorted. So the existing font, Noto Sans KR, is not very readable on Windows. This PR improves readability of Korean glyphs on Windows.

## Before
![원1](https://user-images.githubusercontent.com/11029378/138592394-16b15787-532d-4421-a5eb-ed85675290fa.png)

## After
![원2](https://user-images.githubusercontent.com/11029378/138592409-f3a440ee-f0fc-40e4-9561-42c479439c9f.png)

The fonts included in this PR are licensed under the SIL Open Font License and generated with these commands:

```sh
pyftsubset NanumBarunGothic.ttf \
--unicodes=U+AC00-D7AF,U+1100-11FF,U+3130-318F,U+A960-A97F,U+D7B0-D7FF \
--output-file=NanumBarunGothic.ttf.woff --flavor=woff
```
```sh
pyftsubset NanumBarunGothic.ttf \
--unicodes=U+AC00-D7AF,U+1100-11FF,U+3130-318F,U+A960-A97F,U+D7B0-D7FF \
--output-file=NanumBarunGothic.ttf.woff2 --flavor=woff2
```

r? ``@GuillaumeGomez``

1 files changed, 14 insertions, 14 deletions

diff --git a/src/test/rustdoc-gui/module-items-font.goml b/src/test/rustdoc-gui/module-items-font.goml
index ab595d28019..0316172ee14 100644
--- a/src/test/rustdoc-gui/module-items-font.goml
+++ b/src/test/rustdoc-gui/module-items-font.goml
@@ -1,23 +1,23 @@
 // This test checks that the correct font is used on module items (in index.html pages).
 goto: file://|DOC_PATH|/test_docs/index.html
-assert-css: (".item-table .module-item a", {"font-family": '"Fira Sans", Arial, sans-serif'}, ALL)
-assert-css: (".item-table .docblock-short", {"font-family": '"Source Serif 4", "Noto Sans KR", serif'}, ALL)
+assert-css: (".item-table .module-item a", {"font-family": '"Fira Sans", Arial, NanumBarunGothic, sans-serif'}, ALL)
+assert-css: (".item-table .docblock-short", {"font-family": '"Source Serif 4", NanumBarunGothic, serif'}, ALL)
 
 // modules
-assert-css: ("#modules + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, sans-serif'})
-assert-css: ("#modules + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", "Noto Sans KR", serif'})
+assert-css: ("#modules + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, NanumBarunGothic, sans-serif'})
+assert-css: ("#modules + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", NanumBarunGothic, serif'})
 // structs
-assert-css: ("#structs + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, sans-serif'})
-assert-css: ("#structs + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", "Noto Sans KR", serif'})
+assert-css: ("#structs + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, NanumBarunGothic, sans-serif'})
+assert-css: ("#structs + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", NanumBarunGothic, serif'})
 // enums
-assert-css: ("#enums + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, sans-serif'})
-assert-css: ("#enums + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", "Noto Sans KR", serif'})
+assert-css: ("#enums + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, NanumBarunGothic, sans-serif'})
+assert-css: ("#enums + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", NanumBarunGothic, serif'})
 // traits
-assert-css: ("#traits + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, sans-serif'})
-assert-css: ("#traits + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", "Noto Sans KR", serif'})
+assert-css: ("#traits + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, NanumBarunGothic, sans-serif'})
+assert-css: ("#traits + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", NanumBarunGothic, serif'})
 // functions
-assert-css: ("#functions + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, sans-serif'})
-assert-css: ("#functions + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", "Noto Sans KR", serif'})
+assert-css: ("#functions + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, NanumBarunGothic, sans-serif'})
+assert-css: ("#functions + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", NanumBarunGothic, serif'})
 // keywords
-assert-css: ("#keywords + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, sans-serif'})
-assert-css: ("#keywords + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", "Noto Sans KR", serif'})
+assert-css: ("#keywords + .item-table .item-left a", {"font-family": '"Fira Sans", Arial, NanumBarunGothic, sans-serif'})
+assert-css: ("#keywords + .item-table .item-right.docblock-short", {"font-family": '"Source Serif 4", NanumBarunGothic, serif'})