fix: make schema.org markup valid (#4)

Squashed commit of the following:

commit 49c1b3b1556a0eb91c429a961fedd2bded8ffd47
Author: Armand Philippot <git@armandphilippot.com>
Date:   Wed Feb 16 15:17:52 2022 +0100

    chore: add headline field to blogPosting schema

commit 42214c6f032cc899ec252a9387be35dcad738546
Author: Armand Philippot <git@armandphilippot.com>
Date:   Wed Feb 16 15:09:11 2022 +0100

    chore: update the searchAction markup and add query-input

    Google was complaining about "query-input" which is not in Schema.org
    representation. So I added it.

commit 5f29226d937cbdcd262df2793f1588435d850f02
Author: Armand Philippot <git@armandphilippot.com>
Date:   Wed Feb 16 14:32:14 2022 +0100

    chore: remove breadcrumb from homepage

    The breadcrumb is not displayed on the homepage, so the breadcrumb
    field should not appear inside Schema markup.

7 files changed, 8 insertions, 3 deletions

diff --git a/src/pages/article/[slug].tsx b/src/pages/article/[slug].tsx
index a0255fa..2fd1850 100644
--- a/src/pages/article/[slug].tsx
+++ b/src/pages/article/[slug].tsx
@@ -120,6 +120,7 @@ const SingleArticle: NextPageWithLayout<ArticleProps> = ({
     datePublished: publicationDate.toISOString(),
     discussionUrl: `${articleUrl}/#comments`,
     editor: { '@id': `${settings.url}/#branding` },
+    headline: title,
     image: featuredImage?.sourceUrl,
     inLanguage: settings.locales.defaultLocale,
     isPartOf: {
diff --git a/src/pages/index.tsx b/src/pages/index.tsx
index 55bc14c..374e56f 100644
--- a/src/pages/index.tsx
+++ b/src/pages/index.tsx
@@ -152,7 +152,6 @@ const Home: NextPageWithLayout<HomePageProps> = ({
   const webpageSchema: WebPage = {
     '@id': `${settings.url}/#home`,
     '@type': 'WebPage',
-    breadcrumb: { '@id': `${settings.url}/#breadcrumb` },
     name: pageTitle,
     description: pageDescription,
     author: { '@id': `${settings.url}/#branding` },
diff --git a/src/pages/mentions-legales.tsx b/src/pages/mentions-legales.tsx
index b1dca02..0b92294 100644
--- a/src/pages/mentions-legales.tsx
+++ b/src/pages/mentions-legales.tsx
@@ -77,6 +77,7 @@ const LegalNotice: NextPageWithLayout = () => {
     dateModified: updateDate.toISOString(),
     datePublished: publicationDate.toISOString(),
     editor: { '@id': `${settings.url}/#branding` },
+    headline: title,
     inLanguage: settings.locales.defaultLocale,
     license: 'https://creativecommons.org/licenses/by-sa/4.0/deed.fr',
     mainEntityOfPage: { '@id': `${pageUrl}` },
diff --git a/src/pages/projet/[slug].tsx b/src/pages/projet/[slug].tsx
index f72063a..fe62f0e 100644
--- a/src/pages/projet/[slug].tsx
+++ b/src/pages/projet/[slug].tsx
@@ -78,6 +78,7 @@ const Project: NextPageWithLayout<ProjectProps> = ({
     dateModified: updateDate.toISOString(),
     datePublished: publicationDate.toISOString(),
     editor: { '@id': `${settings.url}/#branding` },
+    headline: title,
     thumbnailUrl: meta.hasCover ? `/projects/${id}.jpg` : '',
     image: meta.hasCover ? `/projects/${id}.jpg` : '',
     inLanguage: settings.locales.defaultLocale,
diff --git a/src/pages/projets.tsx b/src/pages/projets.tsx
index 48e55e5..998c67f 100644
--- a/src/pages/projets.tsx
+++ b/src/pages/projets.tsx
@@ -66,6 +66,7 @@ const Projects = ({ projects }: { projects: Project[] }) => {
     dateModified: updateDate.toISOString(),
     datePublished: publicationDate.toISOString(),
     editor: { '@id': `${settings.url}/#branding` },
+    headline: meta.title,
     inLanguage: settings.locales.defaultLocale,
     license: 'https://creativecommons.org/licenses/by-sa/4.0/deed.fr',
     mainEntityOfPage: { '@id': `${pageUrl}` },
diff --git a/src/pages/sujet/[slug].tsx b/src/pages/sujet/[slug].tsx
index 82af2ff..dc5ee7e 100644
--- a/src/pages/sujet/[slug].tsx
+++ b/src/pages/sujet/[slug].tsx
@@ -79,7 +79,7 @@ const Topic: NextPageWithLayout<TopicProps> = ({ topic, allTopics }) => {
   const updateDate = new Date(topic.dates.update);
 
   const articleSchema: Article = {
-    '@id': `${settings.url}/topic`,
+    '@id': `${settings.url}/#topic`,
     '@type': 'Article',
     name: topic.title,
     description: topic.intro,
@@ -90,6 +90,7 @@ const Topic: NextPageWithLayout<TopicProps> = ({ topic, allTopics }) => {
     dateModified: updateDate.toISOString(),
     datePublished: publicationDate.toISOString(),
     editor: { '@id': `${settings.url}/#branding` },
+    headline: topic.title,
     thumbnailUrl: topic.featuredImage?.sourceUrl,
     image: topic.featuredImage?.sourceUrl,
     inLanguage: settings.locales.defaultLocale,
diff --git a/src/pages/thematique/[slug].tsx b/src/pages/thematique/[slug].tsx
index d737ea7..a8cb478 100644
--- a/src/pages/thematique/[slug].tsx
+++ b/src/pages/thematique/[slug].tsx
@@ -78,7 +78,7 @@ const Thematic: NextPageWithLayout<ThematicProps> = ({
   const updateDate = new Date(thematic.dates.update);
 
   const articleSchema: Article = {
-    '@id': `${settings.url}/thematic`,
+    '@id': `${settings.url}/#thematic`,
     '@type': 'Article',
     name: thematic.title,
     description: thematic.intro,
@@ -89,6 +89,7 @@ const Thematic: NextPageWithLayout<ThematicProps> = ({
     dateModified: updateDate.toISOString(),
     datePublished: publicationDate.toISOString(),
     editor: { '@id': `${settings.url}/#branding` },
+    headline: thematic.title,
     inLanguage: settings.locales.defaultLocale,
     isPartOf: { '@id': `${settings.url}/blog` },
     license: 'https://creativecommons.org/licenses/by-sa/4.0/deed.fr',