[Feature] Add translated descriptions to checks

[Baspa]

No description provided.

[Baspa]

@ThibaultDuhem if you would like you could make a new PR to add the French translations for those strings:

    "When the page has the 'nofollow' tag or meta tag set, search engines will not follow the links on the page.": "When the page has the 'nofollow' tag or meta tag set, search engines will not follow the links on the page.",
    "The Time To First Byte (TTFB) should be below 600 ms because this will improve the page load time.": "The Time To First Byte (TTFB) should be below 600 ms because this will improve the page load time.",
    "The page response should return a 200 status code because this means the page is available.": "The page response should return a 200 status code because this means the page is available.",
    "Javascript files are not bigger than 1 MB because this will slow down the page load time.": "Javascript files are not bigger than 1 MB because this will slow down the page load time.",
    "Images are not larger than 1 MB because this will slow down the page load time.": "Images are not larger than 1 MB because this will slow down the page load time.",
    "HTML is not larger than 100 KB because this will slow down the page load time.": "HTML is not larger than 100 KB because this will slow down the page load time.",
    "CSS files are not bigger than 15 KB because this will slow down the page load time.": "CSS files are not bigger than 15 KB because this will slow down the page load time.",
    "The HTML of the page should be GZIP compressed to reduce the size of the response.": "The HTML of the page should be GZIP compressed to reduce the size of the response.",
    "The title of the page should not be longer than 60 characters because this is the maximum length that is shown in the search results.": "The title of the page should not be longer than 60 characters because this is the maximum length that is shown in the search results.",
    "The page should have an Open Graph image because this is the image that will be used when the page is shared on social media.": "The page should have an Open Graph image because this is the image that will be used when the page is shared on social media.",
    "The lang attribute should be set because this is used by search engines to determine the language of the page.": "The lang attribute should be set because this is used by search engines to determine the language of the page.",
    "The meta description is used by search engines to show a description of the page in the search results.": "The meta description is used by search engines to show a description of the page in the search results.",
    "The content should contain at least 30% transition words.": "The content should contain at least 30% transition words.",
    "The content should not contain sentences with more than 20 words.": "The content should not contain sentences with more than 20 words.",
    "The page should have only one H1 tag because there should be only one main heading on the page. The H1 tag should be used to describe the main topic of the page. The H1 tag is also used by search engines to determine the topic of the page.":"The page should have only one H1 tag because there should be only one main heading on the page. The H1 tag should be used to describe the main topic of the page. The H1 tag is also used by search engines to determine the topic of the page.",
    "All links on the page should redirect to an url using HTTPS instead of HTTP because this is more secure.":"All links on the page should redirect to an url using HTTPS instead of HTTP because this is more secure.",
    "The focus keyword should be in the title of the page because the visitor will see this in the search results.":"The focus keyword should be in the title of the page because the visitor will see this in the search results.",
    "The focus keyword should be in the first paragraph of the content because this is the most important part of the content.":"The focus keyword should be in the first paragraph of the content because this is the most important part of the content.",
    "The length of the content should be at least 2100 characters.":"The length of the content should be at least 2100 characters.",
    "The page should not contain any broken links because it is bad for the user experience.": "The page should not contain any broken links because it is bad for the user experience.",
    "The page should not contain any broken images because it is bad for the user experience.": "The page should not contain any broken images because it is bad for the user experience.",
    "Every image on the page should have an alt tag to describe the image.": "Every image on the page should have an alt tag to describe the image.",
    "The robots.txt file should allow indexing of the page.": "The robots.txt file should allow indexing of the page.",
    "When the page has the 'noindex' tag or meta tag set, search engines will not index the page.": "When the page has the 'noindex' tag or meta tag set, search engines will not index the page."