i18n: rewrite TRANSLATORS comments to describe meaning not UI position

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

src/components/LeftSidebar/LeftSidebar.vue

@@ -23,7 +23,7 @@
 					<NcIconSvgWrapper :path="mdiFolder" :size="20" />
 				</template>
 			</NcAppNavigationItem>
-			<!-- TRANSLATORS: Navigation menu item. "Validate" here is a technical process: the app checks the cryptographic integrity of a document's signatures, the certificate chain and revocation status. It does NOT mean approving or authorizing something. Choose a word in your language that conveys "to check" or "to verify", not "to approve" or "to authorize". -->
+			<!-- TRANSLATORS: "Validate" here is a technical process: checking the cryptographic integrity of the signatures, the certificate chain and revocation status. It does NOT mean approving or authorizing something. Choose a word in your language that conveys "to check" or "to verify", not "to approve" or "to authorize". -->
 			<NcAppNavigationItem id="validation"
 				:to="{name: 'validation'}"
 				:name="t('libresign', 'Validate')"

src/views/Documents/IdDocsValidation.vue

@@ -126,7 +126,7 @@
 									<template #icon>
 										<NcIconSvgWrapper :path="mdiEye" :size="20" />
 									</template>
-									<!-- TRANSLATORS: Button that triggers the cryptographic check of a signed document. "Validate" here is a technical process: the app checks the signature integrity, the certificate chain and revocation status. It does NOT mean approving or authorizing something. Choose a word in your language that conveys "to check" or "to verify", not "to approve" or "to authorize". -->
+									<!-- TRANSLATORS: "Validate" here is a technical process: checking the cryptographic integrity of the signatures, the certificate chain and revocation status. It does NOT mean approving or authorizing something. Choose a word in your language that conveys "to check" or "to verify", not "to approve" or "to authorize". -->
 									{{ t('libresign', 'Validate') }}
 								</NcActionButton>
 							</template>

src/views/FilesList/FileEntry/FileEntryActions.vue

@@ -173,7 +173,7 @@ export default {
 		})
 		this.registerAction({
 			id: 'validate',
-			// TRANSLATORS: Action label for a technical process: the app checks the cryptographic integrity of the document signatures, the certificate chain and revocation status. It does NOT mean approving or authorizing something. Choose a word in your language that conveys "to check" or "to verify", not "to approve" or "to authorize".
+			// TRANSLATORS: "Validate" here is a technical process: checking the cryptographic integrity of the signatures, the certificate chain and revocation status. It does NOT mean approving or authorizing something. Choose a word in your language that conveys "to check" or "to verify", not "to approve" or "to authorize".
 			title: t('libresign', 'Validate'),
 			iconSvgInline: svgTextBoxCheck,
 		})