spacing consistency in table of contents google#652

adding spacing consistency after `:` for table of contents

po/ja.po

@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Comprehensive Rust 🦀\n"
 "POT-Creation-Date: \n"
-"PO-Revision-Date: 2023-05-28 17:35+0900\n"
+"PO-Revision-Date: 2023-05-28 17:39+0900\n"
 "Last-Translator: Kenta Aratani <[email protected]>\n"
 "Language-Team: Japanese <[email protected]>\n"
 "Language: ja\n"
@@ -249,7 +249,7 @@ msgstr "イテレータと所有権"
 
 #: src/SUMMARY.md:71
 msgid "Day 2: Morning"
-msgstr "Day 2；AM"
+msgstr "Day 2： AM"
 
 #: src/SUMMARY.md:76
 msgid "Structs"
@@ -313,7 +313,7 @@ msgstr "ポイントとポリゴン"
 
 #: src/SUMMARY.md:94
 msgid "Day 2: Afternoon"
-msgstr "Day 2：PM"
+msgstr "Day 2： PM"
 
 #: src/SUMMARY.md:96 src/SUMMARY.md:286
 msgid "Control Flow"
@@ -417,7 +417,7 @@ msgstr "文字列とイテレータ"
 
 #: src/SUMMARY.md:124
 msgid "Day 3: Morning"
-msgstr "Day 3：AM"
+msgstr "Day 3： AM"
 
 #: src/SUMMARY.md:129
 msgid "Generics"
@@ -501,7 +501,7 @@ msgstr "GUIライブラリ"
 
 #: src/SUMMARY.md:151
 msgid "Day 3: Afternoon"
-msgstr "Day 3：PM"
+msgstr "Day 3： PM"
 
 #: src/SUMMARY.md:153
 msgid "Error Handling"
@@ -677,7 +677,7 @@ msgstr "Java"
 
 #: src/SUMMARY.md:207
 msgid "Bare Metal: Morning"
-msgstr "ベアメタル：AM"
+msgstr "ベアメタル： AM"
 
 #: src/SUMMARY.md:212
 msgid "no_std"
@@ -737,7 +737,7 @@ msgstr "コンパス"
 
 #: src/SUMMARY.md:228
 msgid "Bare Metal: Afternoon"
-msgstr "ベアメタル：PM"
+msgstr "ベアメタル： PM"
 
 #: src/SUMMARY.md:230
 msgid "Application Processors"
@@ -813,7 +813,7 @@ msgstr "RTC（リアルタイムクロック）ドライバ"
 
 #: src/SUMMARY.md:255
 msgid "Concurrency: Morning"
-msgstr "並行性：AM"
+msgstr "並行性： AM"
 
 #: src/SUMMARY.md:260
 msgid "Threads"
@@ -873,7 +873,7 @@ msgstr "マルチスレッド・リンクチェッカー"
 
 #: src/SUMMARY.md:277
 msgid "Concurrency: Afternoon"
-msgstr "並行性：PM"
+msgstr "並行性： PM"
 
 #: src/SUMMARY.md:279
 msgid "Async Basics"