Reformat Terce/Sext/None capitulum text as multi-line block scalars

Every capitulum-*.yml under the three Little Hours combined the chapter,
"R. Deo grátias"/"Thanks be to God", and the trailing V./R. pair into one
flat single-line string. The .lang-column CSS already renders on
white-space: pre-line (as little-hour-conclusio.yml's block-scalar text
already demonstrated), so the run-together rendering was purely a missing
line-break bug in the source YAML, not a CSS or resolver issue.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PXySSbbUh1EhdN1RnAoCaP

src/data/propers/common/sext-capitulum-common-of-st-peter.yml

@@ -4,8 +4,16 @@
 # none-antiphon-common-of-st-peter.yml's header.
 id: sext-capitulum-common-of-st-peter
 text:
-  la: "Petrus quidem servabátur in cárcere; orátio autem fiébat sine intermissióne ab Ecclésia ad Deum pro eo. R. Deo grátias. V. Constítues eos príncipes super omnem terram. R. Mémores erunt nóminis tui, Dómine."
-  en: "Peter therefore was kept in prison. But prayer was made without ceasing of the Church unto God for him. R. Thanks be to God. V. Thou shalt make them princes over all the earth. R. They shall remember thy name, O Lord."
+  la: |
+    Petrus quidem servabátur in cárcere; orátio autem fiébat sine intermissióne ab Ecclésia ad Deum pro eo.
+    R. Deo grátias.
+    V. Constítues eos príncipes super omnem terram.
+    R. Mémores erunt nóminis tui, Dómine.
+  en: |
+    Peter therefore was kept in prison. But prayer was made without ceasing of the Church unto God for him.
+    R. Thanks be to God.
+    V. Thou shalt make them princes over all the earth.
+    R. They shall remember thy name, O Lord.
 citation:
   la: "Act 12:5"
   en: "Acts 12:5"